<?xml version="1.0" encoding="UTF-8"?>
<!--XBRL document created by Certent CDM version: 20.11.1 using Fujitsu Interstage XWand -->
<linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/instance http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xbrldt="http://xbrl.org/2005/xbrldt">
    <roleRef roleURI="http://conocophillips.com/role/AccumulatedOtherComprehensiveIncomeTextualDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureAccumulatedOtherComprehensiveIncomeTextualDetails" />
    <roleRef roleURI="http://conocophillips.com/role/AcquisitionOfConchoResourcesIncFairValueOfConsiderationDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureAcquisitionOfConchoResourcesIncFairValueOfConsiderationDetails" />
    <roleRef roleURI="http://conocophillips.com/role/AcquisitionOfConchoResourcesIncNarrativeIntroDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureAcquisitionOfConchoResourcesIncNarrativeIntroDetails" />
    <roleRef roleURI="http://conocophillips.com/role/AquisitonsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureAquisitonsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/AssetsAcquisitionsAndDispositionsTextualsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_AssetsAcquisitionsAndDispositionsTextualsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/CashFlowInformationParentheticalDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureCashFlowInformationParentheticalDetails" />
    <roleRef roleURI="http://conocophillips.com/role/ChangeInAccountingPrinciplesDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureChangeInAccountingPrinciplesDetails" />
    <roleRef roleURI="http://conocophillips.com/role/ConsolidatedStatementOfCashFlowsParenthetical" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_StatementConsolidatedStatementOfCashFlowsParenthetical" />
    <roleRef roleURI="http://conocophillips.com/role/CoverPage" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_CoverPage" />
    <roleRef roleURI="http://conocophillips.com/role/DebtNarrativesDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureDebtNarrativesDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsCommodityBalanceSheetDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureDerivativeAndFinancialInstrumentsCommodityBalanceSheetDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsCommodityGainLossDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureDerivativeAndFinancialInstrumentsCommodityGainLossDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsCommodityNotionalDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureDerivativeAndFinancialInstrumentsCommodityNotionalDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsCostBasisToFairValueDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureDerivativeAndFinancialInstrumentsCostBasisToFairValueDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsCreditRiskDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureDerivativeAndFinancialInstrumentsCreditRiskDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsFinancialInstrumentsCostDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureDerivativeAndFinancialInstrumentsFinancialInstrumentsCostDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsFinancialInstrumentsFairValueDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureDerivativeAndFinancialInstrumentsFinancialInstrumentsFairValueDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsFXBalanceSheetDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureDerivativeAndFinancialInstrumentsFXBalanceSheetDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsFXGainLossDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureDerivativeAndFinancialInstrumentsFXGainLossDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsFXNotionalDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureDerivativeAndFinancialInstrumentsFXNotionalDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsUnrealizedLossPositionDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureDerivativeAndFinancialInstrumentsUnrealizedLossPositionDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureAccumulatedOtherComprehensiveIncomeDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_AccumulatedOtherComprehensiveIncomeDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureAssetRetirementObligationsAndAccruedEnvironmentalCostsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureAssetRetirementObligationsAndAccruedEnvironmentalCostsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureAssetRetirementObligationsAndAccruedEnvironmentalCostsTextualsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureAssetRetirementObligationsAndAccruedEnvironmentalCostsTextualsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureContingenciesAndCommitmentsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_ContingenciesAndCommitmentsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureDebtDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureDebtDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureEmployeeBenefitPlansAmountsRecognizedInBalanceSheetAndAssumptionsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansAmountsRecognizedInBalanceSheetAndAssumptionsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureEmployeeBenefitPlansBenefitPaymentsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansBenefitPaymentsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureEmployeeBenefitPlansComponentsOfNetPeriodicBenefitCostDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansComponentsOfNetPeriodicBenefitCostDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureEmployeeBenefitPlansFairValuesOfPensionPlanAssetsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansFairValuesOfPensionPlanAssetsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureEmployeeBenefitPlansSourcesOfChangeInOtherComprehensiveIncomeDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansSourcesOfChangeInOtherComprehensiveIncomeDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureEmployeeBenefitPlansStockOptionActivityDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansStockOptionActivityDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureEmployeeBenefitPlansStockUnitActivityDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansStockUnitActivityDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureEmployeeBenefitPlansTables" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansTables" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureFairValueMeasurementNonrecurringDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureFairValueMeasurementNonrecurringDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureImpairmentsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureImpairmentsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureInvestmentsLoansAndLTReceivablesComponentsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureInvestmentsLoansAndLTReceivablesComponentsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureOtherFinancialInformationDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_OtherFinancialInformationDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureRelatedPartyTransactionsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureRelatedPartyTransactionsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureSegmentDisclosuresAnalysisOfResultsByOperatingSegmentDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureSegmentDisclosuresAnalysisOfResultsByOperatingSegmentDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureSegmentDisclosuresCapitalExpendituresAndInterestDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureSegmentDisclosuresCapitalExpendituresAndInterestDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureSegmentDisclosuresDepreciationEquityEarningsIncomeTaxDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureSegmentDisclosuresDepreciationEquityEarningsIncomeTaxDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureSegmentDisclosuresGeographicInformationDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureSegmentDisclosuresGeographicInformationDetails" />
    <roleRef roleURI="http://conocophillips.com/role/DisclosureSuspendedWellsExploratoryCapitalizedWellCostsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureSuspendedWellsExploratoryCapitalizedWellCostsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/EmployeeBenefitPlansBenefitCostNarrativeDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansBenefitCostNarrativeDetails" />
    <roleRef roleURI="http://conocophillips.com/role/EmployeeBenefitPlansChangeInBenefitObligationsAndFairValueOfPlanAssetsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansChangeInBenefitObligationsAndFairValueOfPlanAssetsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/EmployeeBenefitPlansChangeInBenefitObligationsParentheticalDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansChangeInBenefitObligationsParentheticalDetails" />
    <roleRef roleURI="http://conocophillips.com/role/EmployeeBenefitPlansFairValuesOfPensionPlanAssetsParentheticalDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansFairValuesOfPensionPlanAssetsParentheticalDetails" />
    <roleRef roleURI="http://conocophillips.com/role/EmployeeBenefitPlansFundingPolicyDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansFundingPolicyDetails" />
    <roleRef roleURI="http://conocophillips.com/role/EmployeeBenefitPlansOtherPlanNarrativeDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansOtherPlanNarrativeDetails" />
    <roleRef roleURI="http://conocophillips.com/role/EmployeeBenefitPlansPerformanceShareActivityDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansPerformanceShareActivityDetails" />
    <roleRef roleURI="http://conocophillips.com/role/EmployeeBenefitPlansPlanAssetNarrativeDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansPlanAssetNarrativeDetails" />
    <roleRef roleURI="http://conocophillips.com/role/EmployeeBenefitPlansProjectedAndAccumulatedBenefitObligationsInExcessOfFairValueDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansProjectedAndAccumulatedBenefitObligationsInExcessOfFairValueDetails" />
    <roleRef roleURI="http://conocophillips.com/role/EmployeeBenefitPlansProjectedBenefitObligationDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansProjectedBenefitObligationDetails" />
    <roleRef roleURI="http://conocophillips.com/role/EmployeeBenefitPlansRestrictedSharesAndUnitsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansRestrictedSharesAndUnitsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/EmployeeBenefitPlansSeverancesDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitPlansSeverancesDetails" />
    <roleRef roleURI="http://conocophillips.com/role/EmployeeBenefitsPlansTextual1Details" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitsPlansTextual1Details" />
    <roleRef roleURI="http://conocophillips.com/role/EmployeeBenefitsPlansTextualDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureEmployeeBenefitsPlansTextualDetails" />
    <roleRef roleURI="http://conocophillips.com/role/FairValueMeasurementFairValueOfFinancialInstrumentsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureFairValueMeasurementFairValueOfFinancialInstrumentsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/FairValueMeasurementFVHierarchyDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureFairValueMeasurementFVHierarchyDetails" />
    <roleRef roleURI="http://conocophillips.com/role/FairValueMeasurementInputsAndValuationTechniquesDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureFairValueMeasurementInputsAndValuationTechniquesDetails" />
    <roleRef roleURI="http://conocophillips.com/role/GuaranteesTextualDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureGuaranteesTextualDetails" />
    <roleRef roleURI="http://conocophillips.com/role/ImpairmentsNarrativesDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureImpairmentsNarrativesDetails" />
    <roleRef roleURI="http://conocophillips.com/role/IncomeTaxesTextualsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_IncomeTaxesTextualsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/InvestmentInCenovusEnergyDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureInvestmentInCenovusEnergyDetails" />
    <roleRef roleURI="http://conocophillips.com/role/InvestmentsLoansAndLTReceivablesFinancialInfoDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureInvestmentsLoansAndLTReceivablesFinancialInfoDetails" />
    <roleRef roleURI="http://conocophillips.com/role/InvestmentsLoansAndLTReceivablesTextualsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_InvestmentsLoansAndLTReceivablesTextualsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/NonMineralLeasesBalanceSheetDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureNonMineralLeasesBalanceSheetDetails" />
    <roleRef roleURI="http://conocophillips.com/role/NonMineralLeasesBalanceSheetLiabilitiesDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureNonMineralLeasesBalanceSheetLiabilitiesDetails" />
    <roleRef roleURI="http://conocophillips.com/role/NonMineralLeasesEndNotesDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureNonMineralLeasesEndNotesDetails" />
    <roleRef roleURI="http://conocophillips.com/role/NonMineralLeasesIntroDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureNonMineralLeasesIntroDetails" />
    <roleRef roleURI="http://conocophillips.com/role/SalesAndOtherOperatingRevenueReceivablesAndContractLiabilitiesDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureSalesAndOtherOperatingRevenueReceivablesAndContractLiabilitiesDetails" />
    <roleRef roleURI="http://conocophillips.com/role/SalesAndOtherOperatingRevenueRevenueFromContractsWithCustomersDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_SalesAndOtherOperatingRevenueRevenueFromContractsWithCustomersDetails" />
    <roleRef roleURI="http://conocophillips.com/role/SalesAndOtherOperatingRevenueTransitionalArrangementsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureSalesAndOtherOperatingRevenueTransitionalArrangementsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/SegmentDisclosuresNetIncomeLossInvestmentsTotalAssetsDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureSegmentDisclosuresNetIncomeLossInvestmentsTotalAssetsDetails" />
    <roleRef roleURI="http://conocophillips.com/role/SegmentDisclosuresSalesByProductDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureSegmentDisclosuresSalesByProductDetails" />
    <roleRef roleURI="http://conocophillips.com/role/StatementConsolidatedStatementOfChangesInEquity" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_ConsolidatedStatementOfChangesInEquity" />
    <roleRef roleURI="http://conocophillips.com/role/SuspendedWellsChangesInWellCostsNarrativeDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureSuspendedWellsChangesInWellCostsNarrativeDetails" />
    <roleRef roleURI="http://conocophillips.com/role/SuspendedWellsExplorationExpenseDetails" xlink:type="simple" xlink:href="cop-20201231.xsd#ELRID_DisclosureSuspendedWellsExplorationExpenseDetails" />
    <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" />
    <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" />
    <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" />
    <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" />
    <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" />
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/AssetsAcquisitionsAndDispositionsTextualsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_157" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AsiaPacificMember1Member" xlink:label="Locator_cop_AsiaPacificMember1Member_158" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_157" xlink:to="Locator_cop_AsiaPacificMember1Member_158" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_155" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AsiaPacificAndMiddleEastSegmentMember" xlink:label="Locator_cop_AsiaPacificAndMiddleEastSegmentMember_156" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_155" xlink:to="Locator_cop_AsiaPacificAndMiddleEastSegmentMember_156" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_149" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AlaskaSegmentMember" xlink:label="Locator_cop_AlaskaSegmentMember_150" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_149" xlink:to="Locator_cop_AlaskaSegmentMember_150" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_151" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LowerFortyEightSegmentMember" xlink:label="Locator_cop_LowerFortyEightSegmentMember_152" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_151" xlink:to="Locator_cop_LowerFortyEightSegmentMember_152" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_153" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CanadaSegmentMember" xlink:label="Locator_cop_CanadaSegmentMember_154" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_153" xlink:to="Locator_cop_CanadaSegmentMember_154" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_159" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EuropeAndNorthAfricaSegmentMember" xlink:label="Locator_cop_EuropeAndNorthAfricaSegmentMember_160" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_159" xlink:to="Locator_cop_EuropeAndNorthAfricaSegmentMember_160" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="Locator_us-gaap_BusinessAcquisitionAxis_161" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_162" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_BusinessAcquisitionAxis_161" xlink:to="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_162" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_163" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AdditionalMontneyAcreageMember" xlink:label="Locator_cop_AdditionalMontneyAcreageMember_164" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_163" xlink:to="Locator_cop_AdditionalMontneyAcreageMember_164" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_165" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ConchoResourcesIncMember" xlink:label="Locator_cop_ConchoResourcesIncMember_166" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_165" xlink:to="Locator_cop_ConchoResourcesIncMember_166" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_167" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_168" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_StatementBusinessSegmentsAxis_167" xlink:to="Locator_us-gaap_SegmentDomain_168" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_169" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_170" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ConsolidationItemsAxis_169" xlink:to="Locator_srt_ConsolidationItemsDomain_170" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_379" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_380" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_srt_ConsolidationItemsAxis_379" xlink:to="Locator_srt_ConsolidationItemsDomain_380" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_173" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="Locator_us-gaap_CorporateNonSegmentMember_174" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidationItemsDomain_173" xlink:to="Locator_us-gaap_CorporateNonSegmentMember_174" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_171" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="Locator_us-gaap_OperatingSegmentsMember_172" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidationItemsDomain_171" xlink:to="Locator_us-gaap_OperatingSegmentsMember_172" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RegulatoryLiabilityAxis" xlink:label="Locator_us-gaap_RegulatoryLiabilityAxis_175" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RegulatoryLiabilityDomain" xlink:label="Locator_us-gaap_RegulatoryLiabilityDomain_176" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RegulatoryLiabilityAxis_175" xlink:to="Locator_us-gaap_RegulatoryLiabilityDomain_176" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RegulatoryLiabilityAxis" xlink:label="Locator_us-gaap_RegulatoryLiabilityAxis_371" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RegulatoryLiabilityDomain" xlink:label="Locator_us-gaap_RegulatoryLiabilityDomain_372" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_RegulatoryLiabilityAxis_371" xlink:to="Locator_us-gaap_RegulatoryLiabilityDomain_372" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RegulatoryLiabilityDomain" xlink:label="Locator_us-gaap_RegulatoryLiabilityDomain_177" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetRetirementObligationCostsMember" xlink:label="Locator_us-gaap_AssetRetirementObligationCostsMember_178" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RegulatoryLiabilityDomain_177" xlink:to="Locator_us-gaap_AssetRetirementObligationCostsMember_178" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_349" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesGross" xlink:label="Locator_us-gaap_PaymentsToAcquireBusinessesGross_350" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationsAbstract_349" xlink:to="Locator_us-gaap_PaymentsToAcquireBusinessesGross_350" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_351" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinancialLiabilities" xlink:label="Locator_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinancialLiabilities_352" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationsAbstract_351" xlink:to="Locator_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinancialLiabilities_352" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_353" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_GasAndOilAreaUndevelopedNet1" xlink:label="Locator_cop_GasAndOilAreaUndevelopedNet1_354" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationsAbstract_353" xlink:to="Locator_cop_GasAndOilAreaUndevelopedNet1_354" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_355" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinorityInterestOwnershipPercentageByParent" xlink:label="Locator_us-gaap_MinorityInterestOwnershipPercentageByParent_356" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationsAbstract_355" xlink:to="Locator_us-gaap_MinorityInterestOwnershipPercentageByParent_356" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_357" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment" xlink:label="Locator_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_358" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationsAbstract_357" xlink:to="Locator_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_358" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_359" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AssetRetirementObligationsAndAccruedEnvironmentalCostNonCurrent" xlink:label="Locator_cop_AssetRetirementObligationsAndAccruedEnvironmentalCostNonCurrent_360" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationsAbstract_359" xlink:to="Locator_cop_AssetRetirementObligationsAndAccruedEnvironmentalCostNonCurrent_360" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_361" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1" xlink:label="Locator_us-gaap_BusinessCombinationConsiderationTransferred1_362" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationsAbstract_361" xlink:to="Locator_us-gaap_BusinessCombinationConsiderationTransferred1_362" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_363" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BusinessCombinationShareExchangeRatio" xlink:label="Locator_cop_BusinessCombinationShareExchangeRatio_364" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationsAbstract_363" xlink:to="Locator_cop_BusinessCombinationShareExchangeRatio_364" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_365" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableShares" xlink:label="Locator_cop_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableShares_366" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationsAbstract_365" xlink:to="Locator_cop_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableShares_366" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_367" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebt" xlink:label="Locator_us-gaap_LongTermDebt_368" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationsAbstract_367" xlink:to="Locator_us-gaap_LongTermDebt_368" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_369" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt" xlink:label="Locator_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_370" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationsAbstract_369" xlink:to="Locator_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_370" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="Locator_us-gaap_SubsequentEventTypeAxis_179" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="Locator_us-gaap_SubsequentEventTypeDomain_180" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_SubsequentEventTypeAxis_179" xlink:to="Locator_us-gaap_SubsequentEventTypeDomain_180" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="Locator_us-gaap_SubsequentEventTypeDomain_181" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="Locator_us-gaap_SubsequentEventMember_182" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SubsequentEventTypeDomain_181" xlink:to="Locator_us-gaap_SubsequentEventMember_182" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_183" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_184" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_183" xlink:to="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_184" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_373" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_374" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_373" xlink:to="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_374" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_185" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AustraliawestassetsMember" xlink:label="Locator_cop_AustraliawestassetsMember_186" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_185" xlink:to="Locator_cop_AustraliawestassetsMember_186" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AustraliawestassetsMember" xlink:label="Locator_cop_AustraliawestassetsMember_217" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BarossaProjectMember" xlink:label="Locator_cop_BarossaProjectMember_218" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_AustraliawestassetsMember_217" xlink:to="Locator_cop_BarossaProjectMember_218" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AustraliawestassetsMember" xlink:label="Locator_cop_AustraliawestassetsMember_219" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CalditaFieldMember" xlink:label="Locator_cop_CalditaFieldMember_220" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_AustraliawestassetsMember_219" xlink:to="Locator_cop_CalditaFieldMember_220" order="2.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AustraliawestassetsMember" xlink:label="Locator_cop_AustraliawestassetsMember_221" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DarwinLNGFacilityMember" xlink:label="Locator_cop_DarwinLNGFacilityMember_222" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_AustraliawestassetsMember_221" xlink:to="Locator_cop_DarwinLNGFacilityMember_222" order="3.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AustraliawestassetsMember" xlink:label="Locator_cop_AustraliawestassetsMember_223" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BayuUndanFieldMember" xlink:label="Locator_cop_BayuUndanFieldMember_224" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_AustraliawestassetsMember_223" xlink:to="Locator_cop_BayuUndanFieldMember_224" order="4.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AustraliawestassetsMember" xlink:label="Locator_cop_AustraliawestassetsMember_225" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PoseidonFieldMember" xlink:label="Locator_cop_PoseidonFieldMember_226" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_AustraliawestassetsMember_225" xlink:to="Locator_cop_PoseidonFieldMember_226" order="5.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AustraliawestassetsMember" xlink:label="Locator_cop_AustraliawestassetsMember_227" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AthenaFieldMember" xlink:label="Locator_cop_AthenaFieldMember_228" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_AustraliawestassetsMember_227" xlink:to="Locator_cop_AthenaFieldMember_228" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_187" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_NiobraraMember" xlink:label="Locator_cop_NiobraraMember_188" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_187" xlink:to="Locator_cop_NiobraraMember_188" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_189" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_GoldenPassMember" xlink:label="Locator_cop_GoldenPassMember_190" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_189" xlink:to="Locator_cop_GoldenPassMember_190" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_193" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_GreatersunrisefieldsMember" xlink:label="Locator_cop_GreatersunrisefieldsMember_194" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_193" xlink:to="Locator_cop_GreatersunrisefieldsMember_194" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_195" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_MagnoliafieldandplatformMember" xlink:label="Locator_cop_MagnoliafieldandplatformMember_196" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_195" xlink:to="Locator_cop_MagnoliafieldandplatformMember_196" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_197" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherPropertiesMember" xlink:label="Locator_cop_OtherPropertiesMember_198" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_197" xlink:to="Locator_cop_OtherPropertiesMember_198" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_199" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_UndevelopedLeaseholdAssetsMember" xlink:label="Locator_cop_UndevelopedLeaseholdAssetsMember_200" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_199" xlink:to="Locator_cop_UndevelopedLeaseholdAssetsMember_200" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_201" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BarnettMember" xlink:label="Locator_cop_BarnettMember_202" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_201" xlink:to="Locator_cop_BarnettMember_202" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_205" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ClairFieldMember" xlink:label="Locator_cop_ClairFieldMember_206" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_205" xlink:to="Locator_cop_ClairFieldMember_206" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_207" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_GreaterKuparukAreaMember" xlink:label="Locator_cop_GreaterKuparukAreaMember_208" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_207" xlink:to="Locator_cop_GreaterKuparukAreaMember_208" order="12.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_211" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SanjuanbasinmemberMember" xlink:label="Locator_cop_SanjuanbasinmemberMember_212" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_211" xlink:to="Locator_cop_SanjuanbasinmemberMember_212" order="14.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_213" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PanhandlememberMember" xlink:label="Locator_cop_PanhandlememberMember_214" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_213" xlink:to="Locator_cop_PanhandlememberMember_214" order="15.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_215" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_WaddellRanchMember" xlink:label="Locator_cop_WaddellRanchMember_216" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_215" xlink:to="Locator_cop_WaddellRanchMember_216" order="16.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_209" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember" xlink:label="Locator_cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember_210" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_209" xlink:to="Locator_cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember_210" order="13.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember" xlink:label="Locator_cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember_229" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FosterCreekChristinaLakeFcclMember" xlink:label="Locator_cop_FosterCreekChristinaLakeFcclMember_230" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember_229" xlink:to="Locator_cop_FosterCreekChristinaLakeFcclMember_230" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember" xlink:label="Locator_cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember_231" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_WesternCanadaGasPropertiesMember" xlink:label="Locator_cop_WesternCanadaGasPropertiesMember_232" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember_231" xlink:to="Locator_cop_WesternCanadaGasPropertiesMember_232" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_203" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CertainunitedkingdomassetsmemberMember" xlink:label="Locator_cop_CertainunitedkingdomassetsmemberMember_204" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_203" xlink:to="Locator_cop_CertainunitedkingdomassetsmemberMember_204" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_191" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_UKSubsidiariesMember" xlink:label="Locator_cop_UKSubsidiariesMember_192" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_191" xlink:to="Locator_cop_UKSubsidiariesMember_192" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementScenarioAxis" xlink:label="Locator_srt_StatementScenarioAxis_233" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="Locator_srt_ScenarioUnspecifiedDomain_234" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_StatementScenarioAxis_233" xlink:to="Locator_srt_ScenarioUnspecifiedDomain_234" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementScenarioAxis" xlink:label="Locator_srt_StatementScenarioAxis_375" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="Locator_srt_ScenarioUnspecifiedDomain_376" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_srt_StatementScenarioAxis_375" xlink:to="Locator_srt_ScenarioUnspecifiedDomain_376" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="Locator_srt_ScenarioUnspecifiedDomain_235" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScenarioPlanMember" xlink:label="Locator_us-gaap_ScenarioPlanMember_236" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ScenarioUnspecifiedDomain_235" xlink:to="Locator_us-gaap_ScenarioPlanMember_236" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_19" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable" xlink:label="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_20" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_19" xlink:to="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_20" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable" xlink:label="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_131" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_132" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_131" xlink:to="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_132" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable" xlink:label="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_133" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_134" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_133" xlink:to="Locator_us-gaap_StatementBusinessSegmentsAxis_134" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable" xlink:label="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_135" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_136" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_135" xlink:to="Locator_srt_ConsolidationItemsAxis_136" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable" xlink:label="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_137" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NonmonetaryTransactionTypeAxis" xlink:label="Locator_us-gaap_NonmonetaryTransactionTypeAxis_138" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_137" xlink:to="Locator_us-gaap_NonmonetaryTransactionTypeAxis_138" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NonmonetaryTransactionTypeAxis" xlink:label="Locator_us-gaap_NonmonetaryTransactionTypeAxis_237" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NonmonetaryTransactionTypeDomain" xlink:label="Locator_us-gaap_NonmonetaryTransactionTypeDomain_238" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_NonmonetaryTransactionTypeAxis_237" xlink:to="Locator_us-gaap_NonmonetaryTransactionTypeDomain_238" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NonmonetaryTransactionTypeAxis" xlink:label="Locator_us-gaap_NonmonetaryTransactionTypeAxis_377" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NonmonetaryTransactionTypeDomain" xlink:label="Locator_us-gaap_NonmonetaryTransactionTypeDomain_378" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_NonmonetaryTransactionTypeAxis_377" xlink:to="Locator_us-gaap_NonmonetaryTransactionTypeDomain_378" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NonmonetaryTransactionTypeDomain" xlink:label="Locator_us-gaap_NonmonetaryTransactionTypeDomain_239" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ExchangeOfProductiveAssetsMember" xlink:label="Locator_us-gaap_ExchangeOfProductiveAssetsMember_240" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_NonmonetaryTransactionTypeDomain_239" xlink:to="Locator_us-gaap_ExchangeOfProductiveAssetsMember_240" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable" xlink:label="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_139" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RegulatoryLiabilityAxis" xlink:label="Locator_us-gaap_RegulatoryLiabilityAxis_140" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_139" xlink:to="Locator_us-gaap_RegulatoryLiabilityAxis_140" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable" xlink:label="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_141" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementScenarioAxis" xlink:label="Locator_srt_StatementScenarioAxis_142" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_141" xlink:to="Locator_srt_StatementScenarioAxis_142" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable" xlink:label="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_143" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="Locator_us-gaap_BusinessAcquisitionAxis_144" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_143" xlink:to="Locator_us-gaap_BusinessAcquisitionAxis_144" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable" xlink:label="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_145" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="Locator_us-gaap_SubsequentEventTypeAxis_146" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_145" xlink:to="Locator_us-gaap_SubsequentEventTypeAxis_146" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable" xlink:label="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_147" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipAxis" xlink:label="Locator_srt_OwnershipAxis_148" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_147" xlink:to="Locator_srt_OwnershipAxis_148" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipAxis" xlink:label="Locator_srt_OwnershipAxis_241" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipDomain" xlink:label="Locator_srt_OwnershipDomain_242" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_OwnershipAxis_241" xlink:to="Locator_srt_OwnershipDomain_242" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipAxis" xlink:label="Locator_srt_OwnershipAxis_381" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipDomain" xlink:label="Locator_srt_OwnershipDomain_382" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_srt_OwnershipAxis_381" xlink:to="Locator_srt_OwnershipDomain_382" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipDomain" xlink:label="Locator_srt_OwnershipDomain_243" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_MontneyMember" xlink:label="Locator_cop_MontneyMember_244" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_OwnershipDomain_243" xlink:to="Locator_cop_MontneyMember_244" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_245" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Assetheldforsaletransactiondetailabstract" xlink:label="Locator_cop_Assetheldforsaletransactiondetailabstract_246" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_245" xlink:to="Locator_cop_Assetheldforsaletransactiondetailabstract_246" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Assetheldforsaletransactiondetailabstract" xlink:label="Locator_cop_Assetheldforsaletransactiondetailabstract_247" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets" xlink:label="Locator_us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets_248" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_Assetheldforsaletransactiondetailabstract_247" xlink:to="Locator_us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets_248" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Assetheldforsaletransactiondetailabstract" xlink:label="Locator_cop_Assetheldforsaletransactiondetailabstract_249" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Assetsheldforsalecontigentconsinderationcontingentpaymentbasedonfinalinvestmentdecision" xlink:label="Locator_cop_Assetsheldforsalecontigentconsinderationcontingentpaymentbasedonfinalinvestmentdecision_250" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_Assetheldforsaletransactiondetailabstract_249" xlink:to="Locator_cop_Assetsheldforsalecontigentconsinderationcontingentpaymentbasedonfinalinvestmentdecision_250" order="2.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Assetheldforsaletransactiondetailabstract" xlink:label="Locator_cop_Assetheldforsaletransactiondetailabstract_251" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PercentSold" xlink:label="Locator_cop_PercentSold_252" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_Assetheldforsaletransactiondetailabstract_251" xlink:to="Locator_cop_PercentSold_252" order="3.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Assetheldforsaletransactiondetailabstract" xlink:label="Locator_cop_Assetheldforsaletransactiondetailabstract_253" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OwnershipPercentage" xlink:label="Locator_cop_OwnershipPercentage_254" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_Assetheldforsaletransactiondetailabstract_253" xlink:to="Locator_cop_OwnershipPercentage_254" order="4.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Assetheldforsaletransactiondetailabstract" xlink:label="Locator_cop_Assetheldforsaletransactiondetailabstract_255" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="Locator_us-gaap_EquityMethodInvestmentOwnershipPercentage_256" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_Assetheldforsaletransactiondetailabstract_255" xlink:to="Locator_us-gaap_EquityMethodInvestmentOwnershipPercentage_256" order="5.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Assetheldforsaletransactiondetailabstract" xlink:label="Locator_cop_Assetheldforsaletransactiondetailabstract_257" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromSaleOfEquityMethodInvestments" xlink:label="Locator_us-gaap_ProceedsFromSaleOfEquityMethodInvestments_258" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_Assetheldforsaletransactiondetailabstract_257" xlink:to="Locator_us-gaap_ProceedsFromSaleOfEquityMethodInvestments_258" order="6.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Assetheldforsaletransactiondetailabstract" xlink:label="Locator_cop_Assetheldforsaletransactiondetailabstract_259" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SharesExchangeForAssetsHeldForSale" xlink:label="Locator_cop_SharesExchangeForAssetsHeldForSale_260" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_Assetheldforsaletransactiondetailabstract_259" xlink:to="Locator_cop_SharesExchangeForAssetsHeldForSale_260" order="7.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Assetheldforsaletransactiondetailabstract" xlink:label="Locator_cop_Assetheldforsaletransactiondetailabstract_261" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FairValueAssetsDisposedOf" xlink:label="Locator_cop_FairValueAssetsDisposedOf_262" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_Assetheldforsaletransactiondetailabstract_261" xlink:to="Locator_cop_FairValueAssetsDisposedOf_262" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_263" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_264" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_263" xlink:to="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_264" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_265" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_266" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_265" xlink:to="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_266" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_267" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents" xlink:label="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_268" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_267" xlink:to="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_268" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_269" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentSoldCarryingAmount" xlink:label="Locator_us-gaap_EquityMethodInvestmentSoldCarryingAmount_270" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_269" xlink:to="Locator_us-gaap_EquityMethodInvestmentSoldCarryingAmount_270" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_271" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment" xlink:label="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment_272" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_271" xlink:to="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment_272" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_273" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets" xlink:label="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets_274" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_273" xlink:to="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets_274" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_275" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DisposalGroupIncludingDiscontinuedOperationWorkingCapital" xlink:label="Locator_cop_DisposalGroupIncludingDiscontinuedOperationWorkingCapital_276" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_275" xlink:to="Locator_cop_DisposalGroupIncludingDiscontinuedOperationWorkingCapital_276" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_277" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationInventory1" xlink:label="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationInventory1_278" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_277" xlink:to="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationInventory1_278" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_279" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet" xlink:label="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet_280" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_279" xlink:to="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet_280" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_281" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetRetirementObligationsNoncurrent" xlink:label="Locator_us-gaap_AssetRetirementObligationsNoncurrent_282" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_281" xlink:to="Locator_us-gaap_AssetRetirementObligationsNoncurrent_282" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_283" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities" xlink:label="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities_284" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_283" xlink:to="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities_284" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_285" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities" xlink:label="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities_286" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_285" xlink:to="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities_286" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_287" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromIndividuallySignificantComponentDisposedOfOrHeldForSaleExcludingDiscontinuedOperationsBeforeIncomeTax" xlink:label="Locator_us-gaap_IncomeLossFromIndividuallySignificantComponentDisposedOfOrHeldForSaleExcludingDiscontinuedOperationsBeforeIncomeTax_288" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_287" xlink:to="Locator_us-gaap_IncomeLossFromIndividuallySignificantComponentDisposedOfOrHeldForSaleExcludingDiscontinuedOperationsBeforeIncomeTax_288" order="12.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_289" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationSegmentThatIncludesDisposalGroup" xlink:label="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationSegmentThatIncludesDisposalGroup_290" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_289" xlink:to="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationSegmentThatIncludesDisposalGroup_290" order="13.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_291" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent" xlink:label="Locator_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_292" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_291" xlink:to="Locator_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_292" order="14.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_293" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxAssets" xlink:label="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxAssets_294" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_293" xlink:to="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxAssets_294" order="15.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_295" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Disposalgroupincludingdiscontinuedoperationforeigncurrencytranslationadjustment" xlink:label="Locator_cop_Disposalgroupincludingdiscontinuedoperationforeigncurrencytranslationadjustment_296" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_295" xlink:to="Locator_cop_Disposalgroupincludingdiscontinuedoperationforeigncurrencytranslationadjustment_296" order="16.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract" xlink:label="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_297" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent" xlink:label="Locator_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_298" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_297" xlink:to="Locator_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_298" order="17.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_299" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract" xlink:label="Locator_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract_300" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_299" xlink:to="Locator_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract_300" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract" xlink:label="Locator_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract_301" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes" xlink:label="Locator_us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes_302" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract_301" xlink:to="Locator_us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes_302" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract" xlink:label="Locator_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract_303" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="Locator_us-gaap_IncomeLossFromEquityMethodInvestments_304" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract_303" xlink:to="Locator_us-gaap_IncomeLossFromEquityMethodInvestments_304" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract" xlink:label="Locator_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract_305" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf" xlink:label="Locator_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_306" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract_305" xlink:to="Locator_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_306" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract" xlink:label="Locator_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract_307" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleAmountOfImpairmentLoss" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleAmountOfImpairmentLoss_308" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract_307" xlink:to="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleAmountOfImpairmentLoss_308" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract" xlink:label="Locator_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract_309" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ExplorationExpense" xlink:label="Locator_us-gaap_ExplorationExpense_310" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestAbstract_309" xlink:to="Locator_us-gaap_ExplorationExpense_310" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_311" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract" xlink:label="Locator_us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract_312" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_311" xlink:to="Locator_us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract_312" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract" xlink:label="Locator_us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract_313" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnSaleOfOilAndGasProperty" xlink:label="Locator_us-gaap_GainLossOnSaleOfOilAndGasProperty_314" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract_313" xlink:to="Locator_us-gaap_GainLossOnSaleOfOilAndGasProperty_314" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract" xlink:label="Locator_us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract_315" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OilAndGasDeliveryCommitmentsAndContractsDailyProduction" xlink:label="Locator_us-gaap_OilAndGasDeliveryCommitmentsAndContractsDailyProduction_316" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract_315" xlink:to="Locator_us-gaap_OilAndGasDeliveryCommitmentsAndContractsDailyProduction_316" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract" xlink:label="Locator_us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract_317" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_GainLossOnSaleOfOilAndGasPropertyAfterTax" xlink:label="Locator_cop_GainLossOnSaleOfOilAndGasPropertyAfterTax_318" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract_317" xlink:to="Locator_cop_GainLossOnSaleOfOilAndGasPropertyAfterTax_318" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract" xlink:label="Locator_us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract_319" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal" xlink:label="Locator_us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_320" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract_319" xlink:to="Locator_us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_320" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract" xlink:label="Locator_us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract_321" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherNonoperatingIncome" xlink:label="Locator_us-gaap_OtherNonoperatingIncome_322" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GainLossOnSaleOfOilAndGasPropertyAbstract_321" xlink:to="Locator_us-gaap_OtherNonoperatingIncome_322" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_323" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleCarryingValueOfAsset" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleCarryingValueOfAsset_324" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_323" xlink:to="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleCarryingValueOfAsset_324" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_325" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="Locator_us-gaap_EquityMethodInvestments_326" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_325" xlink:to="Locator_us-gaap_EquityMethodInvestments_326" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_327" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingencies" xlink:label="Locator_us-gaap_AccrualForEnvironmentalLossContingencies_328" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_327" xlink:to="Locator_us-gaap_AccrualForEnvironmentalLossContingencies_328" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_329" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_330" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_329" xlink:to="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_330" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_331" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AssetsHeldForSaleContigentConsinderationContingentPaymentBasedOnCrudeOilPricePerBarrelTrigger" xlink:label="Locator_cop_AssetsHeldForSaleContigentConsinderationContingentPaymentBasedOnCrudeOilPricePerBarrelTrigger_332" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_331" xlink:to="Locator_cop_AssetsHeldForSaleContigentConsinderationContingentPaymentBasedOnCrudeOilPricePerBarrelTrigger_332" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_333" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AssetsHeldForSaleContingentConsiderationTerm" xlink:label="Locator_cop_AssetsHeldForSaleContingentConsiderationTerm_334" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_333" xlink:to="Locator_cop_AssetsHeldForSaleContingentConsiderationTerm_334" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_335" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AssetsHeldForSaleContingentConsiderationCrudeOilPricePerBarrelTrigger" xlink:label="Locator_cop_AssetsHeldForSaleContingentConsiderationCrudeOilPricePerBarrelTrigger_336" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_335" xlink:to="Locator_cop_AssetsHeldForSaleContingentConsiderationCrudeOilPricePerBarrelTrigger_336" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_337" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AssetsHeldForSaleContingentConsiderationHenryHubPricePerUnit" xlink:label="Locator_cop_AssetsHeldForSaleContingentConsiderationHenryHubPricePerUnit_338" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_337" xlink:to="Locator_cop_AssetsHeldForSaleContingentConsiderationHenryHubPricePerUnit_338" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_339" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AssetsHeldForSaleContingentConsiderationEffectiveDate" xlink:label="Locator_cop_AssetsHeldForSaleContingentConsiderationEffectiveDate_340" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_339" xlink:to="Locator_cop_AssetsHeldForSaleContingentConsiderationEffectiveDate_340" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_341" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_InvestmentOwnedCommonStockPricePerShare" xlink:label="Locator_cop_InvestmentOwnedCommonStockPricePerShare_342" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_341" xlink:to="Locator_cop_InvestmentOwnedCommonStockPricePerShare_342" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_343" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis" xlink:label="Locator_us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis_344" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_343" xlink:to="Locator_us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis_344" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_345" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesCurrent" xlink:label="Locator_us-gaap_AvailableForSaleSecuritiesCurrent_346" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationContingentConsiderationArrangementsAbstract_345" xlink:to="Locator_us-gaap_AvailableForSaleSecuritiesCurrent_346" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_347" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_348" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_347" xlink:to="Locator_us-gaap_BusinessCombinationsAbstract_348" order="9.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/EmployeeBenefitsPlansTextual1Details">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="Locator_us-gaap_AwardTypeAxis_513" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_514" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_AwardTypeAxis_513" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_514" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_515" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherStockBasedCompMember" xlink:label="Locator_cop_OtherStockBasedCompMember_516" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_515" xlink:to="Locator_cop_OtherStockBasedCompMember_516" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_517" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="Locator_us-gaap_EmployeeStockOptionMember_518" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_517" xlink:to="Locator_us-gaap_EmployeeStockOptionMember_518" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="Locator_us-gaap_EmployeeStockOptionMember_519" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_StockOptionsVestedMember" xlink:label="Locator_cop_StockOptionsVestedMember_520" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_EmployeeStockOptionMember_519" xlink:to="Locator_cop_StockOptionsVestedMember_520" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_521" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="Locator_us-gaap_PerformanceSharesMember_522" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_521" xlink:to="Locator_us-gaap_PerformanceSharesMember_522" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="Locator_us-gaap_PerformanceSharesMember_523" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Phillips66Member" xlink:label="Locator_cop_Phillips66Member_524" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PerformanceSharesMember_523" xlink:to="Locator_cop_Phillips66Member_524" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="Locator_us-gaap_PerformanceSharesMember_525" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PSUStockSettledMember" xlink:label="Locator_cop_PSUStockSettledMember_526" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PerformanceSharesMember_525" xlink:to="Locator_cop_PSUStockSettledMember_526" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="Locator_us-gaap_PerformanceSharesMember_527" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PSUCashSettledProgramMember" xlink:label="Locator_cop_PSUCashSettledProgramMember_528" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PerformanceSharesMember_527" xlink:to="Locator_cop_PSUCashSettledProgramMember_528" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_529" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="Locator_us-gaap_RestrictedStockUnitsRSUMember_530" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_529" xlink:to="Locator_us-gaap_RestrictedStockUnitsRSUMember_530" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="Locator_us-gaap_RestrictedStockUnitsRSUMember_531" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_RSUStockSettledShareMember" xlink:label="Locator_cop_RSUStockSettledShareMember_532" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestrictedStockUnitsRSUMember_531" xlink:to="Locator_cop_RSUStockSettledShareMember_532" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="Locator_us-gaap_RestrictedStockUnitsRSUMember_533" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_RSUCashSettledMember" xlink:label="Locator_cop_RSUCashSettledMember_534" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestrictedStockUnitsRSUMember_533" xlink:to="Locator_cop_RSUCashSettledMember_534" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="Locator_srt_RangeAxis_535" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_536" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_RangeAxis_535" xlink:to="Locator_srt_RangeMember_536" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="Locator_srt_RangeAxis_537" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_538" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_srt_RangeAxis_537" xlink:to="Locator_srt_RangeMember_538" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_539" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember" xlink:label="Locator_srt_MaximumMember_540" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RangeMember_539" xlink:to="Locator_srt_MaximumMember_540" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="Locator_us-gaap_PlanNameAxis_541" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="Locator_us-gaap_PlanNameDomain_542" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_PlanNameAxis_541" xlink:to="Locator_us-gaap_PlanNameDomain_542" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="Locator_us-gaap_PlanNameDomain_543" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_TwentyFourteenOmnibusStockAndPerformanceIncentivePlanOfConocoPhillipsMember" xlink:label="Locator_cop_TwentyFourteenOmnibusStockAndPerformanceIncentivePlanOfConocoPhillipsMember_544" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanNameDomain_543" xlink:to="Locator_cop_TwentyFourteenOmnibusStockAndPerformanceIncentivePlanOfConocoPhillipsMember_544" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_545" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_546" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_545" xlink:to="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_546" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_547" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="Locator_us-gaap_PlanNameAxis_548" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_547" xlink:to="Locator_us-gaap_PlanNameAxis_548" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_549" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="Locator_srt_RangeAxis_550" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_549" xlink:to="Locator_srt_RangeAxis_550" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_551" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="Locator_us-gaap_AwardTypeAxis_552" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_551" xlink:to="Locator_us-gaap_AwardTypeAxis_552" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_553" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployeeBenefitPlansAdditionalTextualAbstract" xlink:label="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_554" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_553" xlink:to="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_554" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployeeBenefitPlansAdditionalTextualAbstract" xlink:label="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_555" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate_556" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_555" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate_556" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployeeBenefitPlansAdditionalTextualAbstract" xlink:label="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_557" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription_558" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_557" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription_558" order="2.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployeeBenefitPlansAdditionalTextualAbstract" xlink:label="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_559" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward_560" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_559" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward_560" order="3.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployeeBenefitPlansAdditionalTextualAbstract" xlink:label="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_561" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualSharesAuthorizedForIssuance" xlink:label="Locator_us-gaap_DeferredCompensationArrangementWithIndividualSharesAuthorizedForIssuance_562" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_561" xlink:to="Locator_us-gaap_DeferredCompensationArrangementWithIndividualSharesAuthorizedForIssuance_562" order="4.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureAccumulatedOtherComprehensiveIncomeDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="Locator_us-gaap_TypeOfAdoptionMember_635" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="Locator_us-gaap_NewAccountingPronouncementMember_636" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TypeOfAdoptionMember_635" xlink:to="Locator_us-gaap_NewAccountingPronouncementMember_636" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="Locator_us-gaap_NewAccountingPronouncementMember_637" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingStandardsUpdate201601Member" xlink:label="Locator_us-gaap_AccountingStandardsUpdate201601Member_638" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_NewAccountingPronouncementMember_637" xlink:to="Locator_us-gaap_AccountingStandardsUpdate201601Member_638" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="Locator_us-gaap_NewAccountingPronouncementMember_639" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingStandardsUpdate201802Member" xlink:label="Locator_us-gaap_AccountingStandardsUpdate201802Member_640" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_NewAccountingPronouncementMember_639" xlink:to="Locator_us-gaap_AccountingStandardsUpdate201802Member_640" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_631" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_632" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_631" xlink:to="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_632" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_641" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="Locator_us-gaap_TypeOfAdoptionMember_642" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_641" xlink:to="Locator_us-gaap_TypeOfAdoptionMember_642" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_665" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="Locator_us-gaap_TypeOfAdoptionMember_666" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_665" xlink:to="Locator_us-gaap_TypeOfAdoptionMember_666" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_633" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementAxis" xlink:label="Locator_srt_RestatementAxis_634" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_633" xlink:to="Locator_srt_RestatementAxis_634" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementAxis" xlink:label="Locator_srt_RestatementAxis_643" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementDomain" xlink:label="Locator_srt_RestatementDomain_644" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_RestatementAxis_643" xlink:to="Locator_srt_RestatementDomain_644" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementAxis" xlink:label="Locator_srt_RestatementAxis_663" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementDomain" xlink:label="Locator_srt_RestatementDomain_664" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_srt_RestatementAxis_663" xlink:to="Locator_srt_RestatementDomain_664" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementDomain" xlink:label="Locator_srt_RestatementDomain_645" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementAdjustmentMember" xlink:label="Locator_srt_RestatementAdjustmentMember_646" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RestatementDomain_645" xlink:to="Locator_srt_RestatementAdjustmentMember_646" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_647" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax" xlink:label="Locator_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_648" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_647" xlink:to="Locator_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_648" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_649" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_650" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_649" xlink:to="Locator_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_650" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_651" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" xlink:label="Locator_us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_652" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_651" xlink:to="Locator_us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_652" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_653" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_654" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_653" xlink:to="Locator_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_654" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_655" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax" xlink:label="Locator_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_656" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_655" xlink:to="Locator_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_656" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_659" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="Locator_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_660" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_659" xlink:to="Locator_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_660" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_661" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeLossNetOfTax_662" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_661" xlink:to="Locator_us-gaap_OtherComprehensiveIncomeLossNetOfTax_662" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_627" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_628" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_StatementLineItems_627" xlink:to="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_628" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_657" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_658" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_657" xlink:to="Locator_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_658" order="8.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureOtherFinancialInformationDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="Locator_srt_ProductsAndServicesDomain_771" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShippingAndHandlingMember" xlink:label="Locator_us-gaap_ShippingAndHandlingMember_772" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ProductsAndServicesDomain_771" xlink:to="Locator_us-gaap_ShippingAndHandlingMember_772" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_785" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AsiaPacificMember1Member" xlink:label="Locator_cop_AsiaPacificMember1Member_786" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_785" xlink:to="Locator_cop_AsiaPacificMember1Member_786" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_783" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AsiaPacificAndMiddleEastSegmentMember" xlink:label="Locator_cop_AsiaPacificAndMiddleEastSegmentMember_784" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_783" xlink:to="Locator_cop_AsiaPacificAndMiddleEastSegmentMember_784" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_787" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherInternationalSegmentMember" xlink:label="Locator_cop_OtherInternationalSegmentMember_788" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_787" xlink:to="Locator_cop_OtherInternationalSegmentMember_788" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_773" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AlaskaSegmentMember" xlink:label="Locator_cop_AlaskaSegmentMember_774" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_773" xlink:to="Locator_cop_AlaskaSegmentMember_774" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_775" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LowerFortyEightSegmentMember" xlink:label="Locator_cop_LowerFortyEightSegmentMember_776" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_775" xlink:to="Locator_cop_LowerFortyEightSegmentMember_776" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_777" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CanadaSegmentMember" xlink:label="Locator_cop_CanadaSegmentMember_778" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_777" xlink:to="Locator_cop_CanadaSegmentMember_778" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_779" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EuropeAndNorthAfricaSegmentMember" xlink:label="Locator_cop_EuropeAndNorthAfricaSegmentMember_780" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_779" xlink:to="Locator_cop_EuropeAndNorthAfricaSegmentMember_780" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_781" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EuropeMiddleEastAndNorthAfricaMember" xlink:label="Locator_cop_EuropeMiddleEastAndNorthAfricaMember_782" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_781" xlink:to="Locator_cop_EuropeMiddleEastAndNorthAfricaMember_782" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_789" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_790" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_StatementBusinessSegmentsAxis_789" xlink:to="Locator_us-gaap_SegmentDomain_790" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_791" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_792" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ConsolidationItemsAxis_791" xlink:to="Locator_srt_ConsolidationItemsDomain_792" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_795" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="Locator_us-gaap_CorporateNonSegmentMember_796" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidationItemsDomain_795" xlink:to="Locator_us-gaap_CorporateNonSegmentMember_796" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_793" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="Locator_us-gaap_OperatingSegmentsMember_794" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidationItemsDomain_793" xlink:to="Locator_us-gaap_OperatingSegmentsMember_794" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_799" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingCostsAndExpenses" xlink:label="Locator_us-gaap_OperatingCostsAndExpenses_800" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_799" xlink:to="Locator_us-gaap_OperatingCostsAndExpenses_800" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_801" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignCurrencyTransactionAbstract" xlink:label="Locator_us-gaap_ForeignCurrencyTransactionAbstract_802" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_801" xlink:to="Locator_us-gaap_ForeignCurrencyTransactionAbstract_802" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignCurrencyTransactionAbstract" xlink:label="Locator_us-gaap_ForeignCurrencyTransactionAbstract_803" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ForeignCurrencyTransactionGainLossAfterTax" xlink:label="Locator_cop_ForeignCurrencyTransactionGainLossAfterTax_804" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ForeignCurrencyTransactionAbstract_803" xlink:to="Locator_cop_ForeignCurrencyTransactionGainLossAfterTax_804" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_719" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_720" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_719" xlink:to="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_720" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_765" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_766" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_765" xlink:to="Locator_us-gaap_StatementBusinessSegmentsAxis_766" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_767" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_768" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_767" xlink:to="Locator_srt_ConsolidationItemsAxis_768" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_769" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="Locator_srt_ProductOrServiceAxis_770" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_769" xlink:to="Locator_srt_ProductOrServiceAxis_770" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="Locator_srt_ProductOrServiceAxis_797" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="Locator_srt_ProductsAndServicesDomain_798" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ProductOrServiceAxis_797" xlink:to="Locator_srt_ProductsAndServicesDomain_798" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/NonMineralLeasesIntroDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="Locator_us-gaap_RelatedPartyDomain_859" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CoVenturerMember" xlink:label="Locator_us-gaap_CoVenturerMember_860" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RelatedPartyDomain_859" xlink:to="Locator_us-gaap_CoVenturerMember_860" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="Locator_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_863" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="Locator_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_864" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_863" xlink:to="Locator_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_864" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="Locator_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_861" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="Locator_us-gaap_RelatedPartyDomain_862" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_861" xlink:to="Locator_us-gaap_RelatedPartyDomain_862" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_865" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="Locator_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_866" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_StatementLineItems_865" xlink:to="Locator_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_866" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_867" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNet" xlink:label="Locator_us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNet_868" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_867" xlink:to="Locator_us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNet_868" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_869" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalLeaseObligations" xlink:label="Locator_us-gaap_CapitalLeaseObligations_870" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_869" xlink:to="Locator_us-gaap_CapitalLeaseObligations_870" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_871" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeasePracticalExpedientsPackage" xlink:label="Locator_us-gaap_LeasePracticalExpedientsPackage_872" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_871" xlink:to="Locator_us-gaap_LeasePracticalExpedientsPackage_872" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_873" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeasePracticalExpedientLessorSingleLeaseComponent" xlink:label="Locator_us-gaap_LeasePracticalExpedientLessorSingleLeaseComponent_874" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_873" xlink:to="Locator_us-gaap_LeasePracticalExpedientLessorSingleLeaseComponent_874" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_875" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="Locator_us-gaap_OperatingLeaseRightOfUseAsset_876" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_875" xlink:to="Locator_us-gaap_OperatingLeaseRightOfUseAsset_876" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_877" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="Locator_us-gaap_OperatingLeaseLiability_878" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_877" xlink:to="Locator_us-gaap_OperatingLeaseLiability_878" order="4.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/StatementConsolidatedStatementOfChangesInEquity">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_949" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="Locator_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_950" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_949" xlink:to="Locator_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_950" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_951" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProfitLoss" xlink:label="Locator_us-gaap_ProfitLoss_952" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_951" xlink:to="Locator_us-gaap_ProfitLoss_952" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_953" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeLossNetOfTax_954" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_953" xlink:to="Locator_us-gaap_OtherComprehensiveIncomeLossNetOfTax_954" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_955" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DividendsCommonStock" xlink:label="Locator_us-gaap_DividendsCommonStock_956" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_955" xlink:to="Locator_us-gaap_DividendsCommonStock_956" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_957" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod" xlink:label="Locator_us-gaap_TreasuryStockValueAcquiredCostMethod_958" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_957" xlink:to="Locator_us-gaap_TreasuryStockValueAcquiredCostMethod_958" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_959" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" xlink:label="Locator_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_960" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_959" xlink:to="Locator_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_960" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_961" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Disposition" xlink:label="Locator_cop_Disposition_962" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_961" xlink:to="Locator_cop_Disposition_962" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_963" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation" xlink:label="Locator_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_964" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_963" xlink:to="Locator_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_964" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_965" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TreasuryStockCommonValue" xlink:label="Locator_us-gaap_TreasuryStockCommonValue_966" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_965" xlink:to="Locator_us-gaap_TreasuryStockCommonValue_966" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_967" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_QuantificationOfChangeInAccountingPrinciple" xlink:label="Locator_cop_QuantificationOfChangeInAccountingPrinciple_968" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_967" xlink:to="Locator_cop_QuantificationOfChangeInAccountingPrinciple_968" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_969" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityOther" xlink:label="Locator_us-gaap_StockholdersEquityOther_970" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_969" xlink:to="Locator_us-gaap_StockholdersEquityOther_970" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_929" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementTable" xlink:label="Locator_us-gaap_StatementTable_930" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_StatementLineItems_929" xlink:to="Locator_us-gaap_StatementTable_930" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementTable" xlink:label="Locator_us-gaap_StatementTable_933" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="Locator_us-gaap_StatementEquityComponentsAxis_934" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_StatementTable_933" xlink:to="Locator_us-gaap_StatementEquityComponentsAxis_934" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="Locator_us-gaap_StatementEquityComponentsAxis_935" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="Locator_us-gaap_EquityComponentDomain_936" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_StatementEquityComponentsAxis_935" xlink:to="Locator_us-gaap_EquityComponentDomain_936" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="Locator_us-gaap_StatementEquityComponentsAxis_971" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="Locator_us-gaap_EquityComponentDomain_972" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_StatementEquityComponentsAxis_971" xlink:to="Locator_us-gaap_EquityComponentDomain_972" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="Locator_us-gaap_EquityComponentDomain_937" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockMember" xlink:label="Locator_us-gaap_CommonStockMember_938" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_EquityComponentDomain_937" xlink:to="Locator_us-gaap_CommonStockMember_938" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="Locator_us-gaap_EquityComponentDomain_939" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="Locator_us-gaap_AdditionalPaidInCapitalMember_940" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_EquityComponentDomain_939" xlink:to="Locator_us-gaap_AdditionalPaidInCapitalMember_940" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="Locator_us-gaap_EquityComponentDomain_941" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TreasuryStockMember" xlink:label="Locator_us-gaap_TreasuryStockMember_942" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_EquityComponentDomain_941" xlink:to="Locator_us-gaap_TreasuryStockMember_942" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="Locator_us-gaap_EquityComponentDomain_943" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="Locator_us-gaap_AccumulatedOtherComprehensiveIncomeMember_944" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_EquityComponentDomain_943" xlink:to="Locator_us-gaap_AccumulatedOtherComprehensiveIncomeMember_944" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="Locator_us-gaap_EquityComponentDomain_945" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="Locator_us-gaap_RetainedEarningsMember_946" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_EquityComponentDomain_945" xlink:to="Locator_us-gaap_RetainedEarningsMember_946" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="Locator_us-gaap_EquityComponentDomain_947" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:label="Locator_us-gaap_NoncontrollingInterestMember_948" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_EquityComponentDomain_947" xlink:to="Locator_us-gaap_NoncontrollingInterestMember_948" order="6.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureAssetRetirementObligationsAndAccruedEnvironmentalCostsTextualsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EnvironmentalRemediationContingencyAxis" xlink:label="Locator_us-gaap_EnvironmentalRemediationContingencyAxis_1097" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EnvironmentalRemediationContingencyDomain" xlink:label="Locator_us-gaap_EnvironmentalRemediationContingencyDomain_1098" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_EnvironmentalRemediationContingencyAxis_1097" xlink:to="Locator_us-gaap_EnvironmentalRemediationContingencyDomain_1098" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EnvironmentalRemediationContingencyAxis" xlink:label="Locator_us-gaap_EnvironmentalRemediationContingencyAxis_1099" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EnvironmentalRemediationContingencyDomain" xlink:label="Locator_us-gaap_EnvironmentalRemediationContingencyDomain_1100" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_EnvironmentalRemediationContingencyAxis_1099" xlink:to="Locator_us-gaap_EnvironmentalRemediationContingencyDomain_1100" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EnvironmentalRemediationContingencyDomain" xlink:label="Locator_us-gaap_EnvironmentalRemediationContingencyDomain_1101" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CorporateAndOtherEnvironmentalLiabilitiesMember" xlink:label="Locator_cop_CorporateAndOtherEnvironmentalLiabilitiesMember_1102" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_EnvironmentalRemediationContingencyDomain_1101" xlink:to="Locator_cop_CorporateAndOtherEnvironmentalLiabilitiesMember_1102" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EnvironmentalRemediationContingencyDomain" xlink:label="Locator_us-gaap_EnvironmentalRemediationContingencyDomain_1103" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FederalComprehensiveEnvironmentalResponseCompensationAndLiabilityActOrSimilarStateLawsMember" xlink:label="Locator_cop_FederalComprehensiveEnvironmentalResponseCompensationAndLiabilityActOrSimilarStateLawsMember_1104" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_EnvironmentalRemediationContingencyDomain_1103" xlink:to="Locator_cop_FederalComprehensiveEnvironmentalResponseCompensationAndLiabilityActOrSimilarStateLawsMember_1104" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EnvironmentalRemediationContingencyDomain" xlink:label="Locator_us-gaap_EnvironmentalRemediationContingencyDomain_1105" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AcquiredEnvironmentalObligationsMember" xlink:label="Locator_cop_AcquiredEnvironmentalObligationsMember_1106" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_EnvironmentalRemediationContingencyDomain_1105" xlink:to="Locator_cop_AcquiredEnvironmentalObligationsMember_1106" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EnvironmentalRemediationContingencyDomain" xlink:label="Locator_us-gaap_EnvironmentalRemediationContingencyDomain_1107" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CleanupRemediationActivitiesMember" xlink:label="Locator_cop_CleanupRemediationActivitiesMember_1108" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_EnvironmentalRemediationContingencyDomain_1107" xlink:to="Locator_cop_CleanupRemediationActivitiesMember_1108" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1109" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AccruedEnviornmentalCostsDiscounted" xlink:label="Locator_cop_AccruedEnviornmentalCostsDiscounted_1110" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1109" xlink:to="Locator_cop_AccruedEnviornmentalCostsDiscounted_1110" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1111" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingencies" xlink:label="Locator_us-gaap_AccrualForEnvironmentalLossContingencies_1112" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1111" xlink:to="Locator_us-gaap_AccrualForEnvironmentalLossContingencies_1112" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1113" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_MaximumNumberOfYearsAccruedEnvironmentalLiabilitiesWillBePaidOver" xlink:label="Locator_cop_MaximumNumberOfYearsAccruedEnvironmentalLiabilitiesWillBePaidOver_1114" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1113" xlink:to="Locator_cop_MaximumNumberOfYearsAccruedEnvironmentalLiabilitiesWillBePaidOver_1114" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1115" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesDiscountRate" xlink:label="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesDiscountRate_1116" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1115" xlink:to="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesDiscountRate_1116" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1117" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneYear" xlink:label="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneYear_1118" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1117" xlink:to="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneYear_1118" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1119" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueInSecondYear" xlink:label="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueInSecondYear_1120" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1119" xlink:to="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueInSecondYear_1120" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1121" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueInThirdYear" xlink:label="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueInThirdYear_1122" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1121" xlink:to="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueInThirdYear_1122" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1123" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueInFourthYear" xlink:label="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueInFourthYear_1124" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1123" xlink:to="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueInFourthYear_1124" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1125" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueInFifthYear" xlink:label="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueInFifthYear_1126" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1125" xlink:to="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueInFifthYear_1126" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1127" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueAfterFifthYear" xlink:label="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueAfterFifthYear_1128" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1127" xlink:to="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueAfterFifthYear_1128" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1129" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyTable" xlink:label="Locator_us-gaap_SiteContingencyTable_1130" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1129" xlink:to="Locator_us-gaap_SiteContingencyTable_1130" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyTable" xlink:label="Locator_us-gaap_SiteContingencyTable_1131" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EnvironmentalRemediationContingencyAxis" xlink:label="Locator_us-gaap_EnvironmentalRemediationContingencyAxis_1132" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_SiteContingencyTable_1131" xlink:to="Locator_us-gaap_EnvironmentalRemediationContingencyAxis_1132" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1133" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesGross" xlink:label="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesGross_1134" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1133" xlink:to="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesGross_1134" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureAssetRetirementObligationsAndAccruedEnvironmentalCostsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="Locator_us-gaap_BalanceSheetLocationAxis_1187" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_1188" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_BalanceSheetLocationAxis_1187" xlink:to="Locator_us-gaap_BalanceSheetLocationDomain_1188" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_1189" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCurrentLiabilitiesMember" xlink:label="Locator_us-gaap_OtherCurrentLiabilitiesMember_1190" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_1189" xlink:to="Locator_us-gaap_OtherCurrentLiabilitiesMember_1190" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1191" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyTable" xlink:label="Locator_us-gaap_SiteContingencyTable_1192" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1191" xlink:to="Locator_us-gaap_SiteContingencyTable_1192" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyTable" xlink:label="Locator_us-gaap_SiteContingencyTable_1193" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="Locator_us-gaap_BalanceSheetLocationAxis_1194" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_SiteContingencyTable_1193" xlink:to="Locator_us-gaap_BalanceSheetLocationAxis_1194" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1195" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetRetirementObligation" xlink:label="Locator_us-gaap_AssetRetirementObligation_1196" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1195" xlink:to="Locator_us-gaap_AssetRetirementObligation_1196" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1197" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesGross" xlink:label="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesGross_1198" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1197" xlink:to="Locator_us-gaap_AccrualForEnvironmentalLossContingenciesGross_1198" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1199" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AROAndAccruedEnvironmentalCosts" xlink:label="Locator_cop_AROAndAccruedEnvironmentalCosts_1200" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1199" xlink:to="Locator_cop_AROAndAccruedEnvironmentalCosts_1200" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1201" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AssetRetirementObligationsAndAccruedEnvironmentalCostsDueWithinOneYear" xlink:label="Locator_cop_AssetRetirementObligationsAndAccruedEnvironmentalCostsDueWithinOneYear_1202" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1201" xlink:to="Locator_cop_AssetRetirementObligationsAndAccruedEnvironmentalCostsDueWithinOneYear_1202" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="Locator_us-gaap_SiteContingencyLineItems_1203" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AROAndAccruedEnvironmentalCostsLongTerm" xlink:label="Locator_cop_AROAndAccruedEnvironmentalCostsLongTerm_1204" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SiteContingencyLineItems_1203" xlink:to="Locator_cop_AROAndAccruedEnvironmentalCostsLongTerm_1204" order="5.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureSuspendedWellsExploratoryCapitalizedWellCostsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis" xlink:label="Locator_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_1233" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_1234" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_1233" xlink:to="Locator_us-gaap_ProjectMember_1234" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis" xlink:label="Locator_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_1235" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_1236" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_1235" xlink:to="Locator_us-gaap_ProjectMember_1236" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_1237" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ProjectThirteenMember" xlink:label="Locator_cop_ProjectThirteenMember_1238" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_1237" xlink:to="Locator_cop_ProjectThirteenMember_1238" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_1239" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ProjectElevenMember" xlink:label="Locator_cop_ProjectElevenMember_1240" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_1239" xlink:to="Locator_cop_ProjectElevenMember_1240" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_1241" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ProjectThreeMember" xlink:label="Locator_cop_ProjectThreeMember_1242" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_1241" xlink:to="Locator_cop_ProjectThreeMember_1242" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_1243" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ProjectSixteenMember" xlink:label="Locator_cop_ProjectSixteenMember_1244" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_1243" xlink:to="Locator_cop_ProjectSixteenMember_1244" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_1245" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ProjectMiddleMagdalenaMember" xlink:label="Locator_cop_ProjectMiddleMagdalenaMember_1246" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_1245" xlink:to="Locator_cop_ProjectMiddleMagdalenaMember_1246" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_1247" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_NarwhalTrendAlaskaMember" xlink:label="Locator_cop_NarwhalTrendAlaskaMember_1248" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_1247" xlink:to="Locator_cop_NarwhalTrendAlaskaMember_1248" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_1249" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ProjectkamunsueastMember" xlink:label="Locator_cop_ProjectkamunsueastMember_1250" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_1249" xlink:to="Locator_cop_ProjectkamunsueastMember_1250" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_1251" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Pl782snorwayMember" xlink:label="Locator_cop_Pl782snorwayMember_1252" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_1251" xlink:to="Locator_cop_Pl782snorwayMember_1252" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_1253" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Wl4MalaysiaMember" xlink:label="Locator_cop_Wl4MalaysiaMember_1254" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_1253" xlink:to="Locator_cop_Wl4MalaysiaMember_1254" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_1255" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Projectnc98LibyaMember" xlink:label="Locator_cop_Projectnc98LibyaMember_1256" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_1255" xlink:to="Locator_cop_Projectnc98LibyaMember_1256" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_1257" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherProjectsMember" xlink:label="Locator_cop_OtherProjectsMember_1258" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_1257" xlink:to="Locator_cop_OtherProjectsMember_1258" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_1259" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ProjectFiveMember" xlink:label="Locator_cop_ProjectFiveMember_1260" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_1259" xlink:to="Locator_cop_ProjectFiveMember_1260" order="12.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems" xlink:label="Locator_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_1261" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable" xlink:label="Locator_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable_1262" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_1261" xlink:to="Locator_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable_1262" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable" xlink:label="Locator_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable_1263" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis" xlink:label="Locator_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_1264" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable_1263" xlink:to="Locator_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_1264" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable" xlink:label="Locator_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable_1265" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalUnitsByClassAxis" xlink:label="Locator_us-gaap_CapitalUnitsByClassAxis_1266" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable_1265" xlink:to="Locator_us-gaap_CapitalUnitsByClassAxis_1266" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalUnitsByClassAxis" xlink:label="Locator_us-gaap_CapitalUnitsByClassAxis_1223" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalUnitClassDomain" xlink:label="Locator_us-gaap_CapitalUnitClassDomain_1224" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_CapitalUnitsByClassAxis_1223" xlink:to="Locator_us-gaap_CapitalUnitClassDomain_1224" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalUnitsByClassAxis" xlink:label="Locator_us-gaap_CapitalUnitsByClassAxis_1225" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalUnitClassDomain" xlink:label="Locator_us-gaap_CapitalUnitClassDomain_1226" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_CapitalUnitsByClassAxis_1225" xlink:to="Locator_us-gaap_CapitalUnitClassDomain_1226" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalUnitClassDomain" xlink:label="Locator_us-gaap_CapitalUnitClassDomain_1227" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OneToThreeYearFromCompletionOfDrillingMember" xlink:label="Locator_cop_OneToThreeYearFromCompletionOfDrillingMember_1228" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_CapitalUnitClassDomain_1227" xlink:to="Locator_cop_OneToThreeYearFromCompletionOfDrillingMember_1228" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalUnitClassDomain" xlink:label="Locator_us-gaap_CapitalUnitClassDomain_1229" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FourToSixYearsFromCompletionOfDrillingMember" xlink:label="Locator_cop_FourToSixYearsFromCompletionOfDrillingMember_1230" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_CapitalUnitClassDomain_1229" xlink:to="Locator_cop_FourToSixYearsFromCompletionOfDrillingMember_1230" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalUnitClassDomain" xlink:label="Locator_us-gaap_CapitalUnitClassDomain_1231" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SevenToTenYearsFromCompletionOfDrillingMember" xlink:label="Locator_cop_SevenToTenYearsFromCompletionOfDrillingMember_1232" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_CapitalUnitClassDomain_1231" xlink:to="Locator_cop_SevenToTenYearsFromCompletionOfDrillingMember_1232" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems" xlink:label="Locator_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_1267" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearAbstract" xlink:label="Locator_cop_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearAbstract_1268" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_1267" xlink:to="Locator_cop_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearAbstract_1268" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearAbstract" xlink:label="Locator_cop_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearAbstract_1269" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear" xlink:label="Locator_us-gaap_CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear_1270" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearAbstract_1269" xlink:to="Locator_us-gaap_CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear_1270" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureSegmentDisclosuresGeographicInformationDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_1415" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_US" xlink:label="Locator_country_US_1416" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_SegmentGeographicalDomain_1415" xlink:to="Locator_country_US_1416" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_1417" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_CA" xlink:label="Locator_country_CA_1418" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_SegmentGeographicalDomain_1417" xlink:to="Locator_country_CA_1418" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_1419" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_CN" xlink:label="Locator_country_CN_1420" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_SegmentGeographicalDomain_1419" xlink:to="Locator_country_CN_1420" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_1421" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_ID" xlink:label="Locator_country_ID_1422" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_SegmentGeographicalDomain_1421" xlink:to="Locator_country_ID_1422" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_1423" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_LY" xlink:label="Locator_country_LY_1424" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_SegmentGeographicalDomain_1423" xlink:to="Locator_country_LY_1424" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_1425" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_MY" xlink:label="Locator_country_MY_1426" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_SegmentGeographicalDomain_1425" xlink:to="Locator_country_MY_1426" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_1427" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_NO" xlink:label="Locator_country_NO_1428" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_SegmentGeographicalDomain_1427" xlink:to="Locator_country_NO_1428" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_1429" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_GB" xlink:label="Locator_country_GB_1430" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_SegmentGeographicalDomain_1429" xlink:to="Locator_country_GB_1430" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_1431" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherforeigncountriesmemberMember" xlink:label="Locator_cop_OtherforeigncountriesmemberMember_1432" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_SegmentGeographicalDomain_1431" xlink:to="Locator_cop_OtherforeigncountriesmemberMember_1432" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_1433" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_AU" xlink:label="Locator_country_AU_1434" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_SegmentGeographicalDomain_1433" xlink:to="Locator_country_AU_1434" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="Locator_us-gaap_BalanceSheetLocationAxis_1435" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_1436" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_BalanceSheetLocationAxis_1435" xlink:to="Locator_us-gaap_BalanceSheetLocationDomain_1436" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_1437" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherNoncurrentAssetsMember" xlink:label="Locator_us-gaap_OtherNoncurrentAssetsMember_1438" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_1437" xlink:to="Locator_us-gaap_OtherNoncurrentAssetsMember_1438" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="Locator_srt_StatementGeographicalAxis_1439" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_1440" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_StatementGeographicalAxis_1439" xlink:to="Locator_srt_SegmentGeographicalDomain_1440" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="Locator_srt_StatementGeographicalAxis_1441" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_1442" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_srt_StatementGeographicalAxis_1441" xlink:to="Locator_srt_SegmentGeographicalDomain_1442" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems" xlink:label="Locator_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_1443" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable" xlink:label="Locator_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_1444" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_1443" xlink:to="Locator_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_1444" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable" xlink:label="Locator_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_1445" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="Locator_srt_StatementGeographicalAxis_1446" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_1445" xlink:to="Locator_srt_StatementGeographicalAxis_1446" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable" xlink:label="Locator_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_1447" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="Locator_us-gaap_BalanceSheetLocationAxis_1448" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_1447" xlink:to="Locator_us-gaap_BalanceSheetLocationAxis_1448" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems" xlink:label="Locator_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_1449" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentsGeographicalAreasAbstract" xlink:label="Locator_us-gaap_SegmentsGeographicalAreasAbstract_1450" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_1449" xlink:to="Locator_us-gaap_SegmentsGeographicalAreasAbstract_1450" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentsGeographicalAreasAbstract" xlink:label="Locator_us-gaap_SegmentsGeographicalAreasAbstract_1451" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="Locator_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_1452" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentsGeographicalAreasAbstract_1451" xlink:to="Locator_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_1452" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentsGeographicalAreasAbstract" xlink:label="Locator_us-gaap_SegmentsGeographicalAreasAbstract_1453" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NoncurrentAssets" xlink:label="Locator_us-gaap_NoncurrentAssets_1454" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentsGeographicalAreasAbstract_1453" xlink:to="Locator_us-gaap_NoncurrentAssets_1454" order="2.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureSegmentDisclosuresCapitalExpendituresAndInterestDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_1499" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AsiaPacificAndMiddleEastSegmentMember" xlink:label="Locator_cop_AsiaPacificAndMiddleEastSegmentMember_1500" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_1499" xlink:to="Locator_cop_AsiaPacificAndMiddleEastSegmentMember_1500" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_1501" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherInternationalSegmentMember" xlink:label="Locator_cop_OtherInternationalSegmentMember_1502" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_1501" xlink:to="Locator_cop_OtherInternationalSegmentMember_1502" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_1503" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AlaskaSegmentMember" xlink:label="Locator_cop_AlaskaSegmentMember_1504" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_1503" xlink:to="Locator_cop_AlaskaSegmentMember_1504" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_1505" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LowerFortyEightSegmentMember" xlink:label="Locator_cop_LowerFortyEightSegmentMember_1506" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_1505" xlink:to="Locator_cop_LowerFortyEightSegmentMember_1506" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_1507" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CanadaSegmentMember" xlink:label="Locator_cop_CanadaSegmentMember_1508" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_1507" xlink:to="Locator_cop_CanadaSegmentMember_1508" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_1509" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EuropeAndNorthAfricaSegmentMember" xlink:label="Locator_cop_EuropeAndNorthAfricaSegmentMember_1510" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_1509" xlink:to="Locator_cop_EuropeAndNorthAfricaSegmentMember_1510" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_1511" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_1512" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_StatementBusinessSegmentsAxis_1511" xlink:to="Locator_us-gaap_SegmentDomain_1512" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_1513" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_1514" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ConsolidationItemsAxis_1513" xlink:to="Locator_srt_ConsolidationItemsDomain_1514" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_1515" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="Locator_us-gaap_CorporateNonSegmentMember_1516" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidationItemsDomain_1515" xlink:to="Locator_us-gaap_CorporateNonSegmentMember_1516" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_1517" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="Locator_us-gaap_OperatingSegmentsMember_1518" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidationItemsDomain_1517" xlink:to="Locator_us-gaap_OperatingSegmentsMember_1518" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_1519" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CapitalExpendituresAndInvestmentsAbstract" xlink:label="Locator_cop_CapitalExpendituresAndInvestmentsAbstract_1520" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_1519" xlink:to="Locator_cop_CapitalExpendituresAndInvestmentsAbstract_1520" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CapitalExpendituresAndInvestmentsAbstract" xlink:label="Locator_cop_CapitalExpendituresAndInvestmentsAbstract_1521" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SegmentReportingInformationCapitalExpendituresAndInvestments" xlink:label="Locator_cop_SegmentReportingInformationCapitalExpendituresAndInvestments_1522" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_CapitalExpendituresAndInvestmentsAbstract_1521" xlink:to="Locator_cop_SegmentReportingInformationCapitalExpendituresAndInvestments_1522" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_1523" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestRevenueOrExpenseNetAbstract" xlink:label="Locator_us-gaap_InterestRevenueOrExpenseNetAbstract_1524" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_1523" xlink:to="Locator_us-gaap_InterestRevenueOrExpenseNetAbstract_1524" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestRevenueOrExpenseNetAbstract" xlink:label="Locator_us-gaap_InterestRevenueOrExpenseNetAbstract_1525" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentIncomeInterest" xlink:label="Locator_us-gaap_InvestmentIncomeInterest_1526" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_InterestRevenueOrExpenseNetAbstract_1525" xlink:to="Locator_us-gaap_InvestmentIncomeInterest_1526" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestRevenueOrExpenseNetAbstract" xlink:label="Locator_us-gaap_InterestRevenueOrExpenseNetAbstract_1527" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestAndDebtExpense" xlink:label="Locator_us-gaap_InterestAndDebtExpense_1528" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_InterestRevenueOrExpenseNetAbstract_1527" xlink:to="Locator_us-gaap_InterestAndDebtExpense_1528" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_1529" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_1530" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_1529" xlink:to="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_1530" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_1531" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_1532" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_1531" xlink:to="Locator_us-gaap_StatementBusinessSegmentsAxis_1532" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_1533" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_1534" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_1533" xlink:to="Locator_srt_ConsolidationItemsAxis_1534" order="2.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureSegmentDisclosuresDepreciationEquityEarningsIncomeTaxDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_1575" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AsiaPacificAndMiddleEastSegmentMember" xlink:label="Locator_cop_AsiaPacificAndMiddleEastSegmentMember_1576" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_1575" xlink:to="Locator_cop_AsiaPacificAndMiddleEastSegmentMember_1576" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_1577" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherInternationalSegmentMember" xlink:label="Locator_cop_OtherInternationalSegmentMember_1578" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_1577" xlink:to="Locator_cop_OtherInternationalSegmentMember_1578" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_1579" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AlaskaSegmentMember" xlink:label="Locator_cop_AlaskaSegmentMember_1580" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_1579" xlink:to="Locator_cop_AlaskaSegmentMember_1580" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_1581" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LowerFortyEightSegmentMember" xlink:label="Locator_cop_LowerFortyEightSegmentMember_1582" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_1581" xlink:to="Locator_cop_LowerFortyEightSegmentMember_1582" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_1583" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CanadaSegmentMember" xlink:label="Locator_cop_CanadaSegmentMember_1584" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_1583" xlink:to="Locator_cop_CanadaSegmentMember_1584" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_1585" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EuropeAndNorthAfricaSegmentMember" xlink:label="Locator_cop_EuropeAndNorthAfricaSegmentMember_1586" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_1585" xlink:to="Locator_cop_EuropeAndNorthAfricaSegmentMember_1586" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_1587" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_1588" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_StatementBusinessSegmentsAxis_1587" xlink:to="Locator_us-gaap_SegmentDomain_1588" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_1589" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_1590" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ConsolidationItemsAxis_1589" xlink:to="Locator_srt_ConsolidationItemsDomain_1590" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_1591" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="Locator_us-gaap_CorporateNonSegmentMember_1592" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidationItemsDomain_1591" xlink:to="Locator_us-gaap_CorporateNonSegmentMember_1592" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_1593" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="Locator_us-gaap_OperatingSegmentsMember_1594" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidationItemsDomain_1593" xlink:to="Locator_us-gaap_OperatingSegmentsMember_1594" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_1595" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ConsolidatedDepreciationDepletionAmortizationAndImpairmentsAbstract" xlink:label="Locator_cop_ConsolidatedDepreciationDepletionAmortizationAndImpairmentsAbstract_1596" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_1595" xlink:to="Locator_cop_ConsolidatedDepreciationDepletionAmortizationAndImpairmentsAbstract_1596" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ConsolidatedDepreciationDepletionAmortizationAndImpairmentsAbstract" xlink:label="Locator_cop_ConsolidatedDepreciationDepletionAmortizationAndImpairmentsAbstract_1597" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Depreciationdepletionamortizationimpairments" xlink:label="Locator_cop_Depreciationdepletionamortizationimpairments_1598" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_ConsolidatedDepreciationDepletionAmortizationAndImpairmentsAbstract_1597" xlink:to="Locator_cop_Depreciationdepletionamortizationimpairments_1598" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_1599" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EquityInEarningsOfAffiliatesAbstract" xlink:label="Locator_cop_EquityInEarningsOfAffiliatesAbstract_1600" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_1599" xlink:to="Locator_cop_EquityInEarningsOfAffiliatesAbstract_1600" order="2.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EquityInEarningsOfAffiliatesAbstract" xlink:label="Locator_cop_EquityInEarningsOfAffiliatesAbstract_1601" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="Locator_us-gaap_IncomeLossFromEquityMethodInvestments_1602" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_EquityInEarningsOfAffiliatesAbstract_1601" xlink:to="Locator_us-gaap_IncomeLossFromEquityMethodInvestments_1602" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_1603" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxesPaidNetAbstract" xlink:label="Locator_us-gaap_IncomeTaxesPaidNetAbstract_1604" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_1603" xlink:to="Locator_us-gaap_IncomeTaxesPaidNetAbstract_1604" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxesPaidNetAbstract" xlink:label="Locator_us-gaap_IncomeTaxesPaidNetAbstract_1605" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="Locator_us-gaap_IncomeTaxExpenseBenefit_1606" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxesPaidNetAbstract_1605" xlink:to="Locator_us-gaap_IncomeTaxExpenseBenefit_1606" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_1607" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_1608" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_1607" xlink:to="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_1608" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_1609" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_1610" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_1609" xlink:to="Locator_us-gaap_StatementBusinessSegmentsAxis_1610" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_1611" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_1612" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_1611" xlink:to="Locator_srt_ConsolidationItemsAxis_1612" order="2.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DebtNarrativesDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="Locator_us-gaap_BusinessAcquisitionAxis_1709" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_1710" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_BusinessAcquisitionAxis_1709" xlink:to="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_1710" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_1711" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ConchoResourcesIncMember" xlink:label="Locator_cop_ConchoResourcesIncMember_1712" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_1711" xlink:to="Locator_cop_ConchoResourcesIncMember_1712" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="Locator_us-gaap_SubsequentEventTypeAxis_1713" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="Locator_us-gaap_SubsequentEventTypeDomain_1714" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_SubsequentEventTypeAxis_1713" xlink:to="Locator_us-gaap_SubsequentEventTypeDomain_1714" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="Locator_us-gaap_SubsequentEventTypeAxis_1715" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="Locator_us-gaap_SubsequentEventTypeDomain_1716" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_SubsequentEventTypeAxis_1715" xlink:to="Locator_us-gaap_SubsequentEventTypeDomain_1716" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="Locator_us-gaap_SubsequentEventTypeDomain_1717" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="Locator_us-gaap_SubsequentEventMember_1718" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SubsequentEventTypeDomain_1717" xlink:to="Locator_us-gaap_SubsequentEventMember_1718" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="Locator_us-gaap_DebtInstrumentLineItems_1719" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="Locator_us-gaap_DebtInstrumentFaceAmount_1720" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentLineItems_1719" xlink:to="Locator_us-gaap_DebtInstrumentFaceAmount_1720" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="Locator_us-gaap_DebtInstrumentLineItems_1721" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfDebt" xlink:label="Locator_us-gaap_RepaymentsOfDebt_1722" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentLineItems_1721" xlink:to="Locator_us-gaap_RepaymentsOfDebt_1722" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="Locator_us-gaap_DebtInstrumentLineItems_1723" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_RepaymentsOfDebtAtMaturity" xlink:label="Locator_cop_RepaymentsOfDebtAtMaturity_1724" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentLineItems_1723" xlink:to="Locator_cop_RepaymentsOfDebtAtMaturity_1724" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="Locator_us-gaap_DebtInstrumentLineItems_1725" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_TotalPrepaymentsOfDebt" xlink:label="Locator_cop_TotalPrepaymentsOfDebt_1726" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentLineItems_1725" xlink:to="Locator_cop_TotalPrepaymentsOfDebt_1726" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="Locator_us-gaap_DebtInstrumentLineItems_1727" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsOfDebtExtinguishmentCosts" xlink:label="Locator_us-gaap_PaymentsOfDebtExtinguishmentCosts_1728" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentLineItems_1727" xlink:to="Locator_us-gaap_PaymentsOfDebtExtinguishmentCosts_1728" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="Locator_us-gaap_DebtInstrumentLineItems_1729" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="Locator_us-gaap_DebtInstrumentTable_1730" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DebtInstrumentLineItems_1729" xlink:to="Locator_us-gaap_DebtInstrumentTable_1730" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="Locator_us-gaap_DebtInstrumentTable_1731" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="Locator_us-gaap_DebtInstrumentAxis_1732" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DebtInstrumentTable_1731" xlink:to="Locator_us-gaap_DebtInstrumentAxis_1732" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="Locator_us-gaap_DebtInstrumentAxis_1733" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_1734" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_DebtInstrumentAxis_1733" xlink:to="Locator_us-gaap_DebtInstrumentNameDomain_1734" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_1735" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_NinePointOneTwoFiveNotesMember" xlink:label="Locator_cop_NinePointOneTwoFiveNotesMember_1736" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_1735" xlink:to="Locator_cop_NinePointOneTwoFiveNotesMember_1736" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_1737" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EightPointTwoPercentNotesMember" xlink:label="Locator_cop_EightPointTwoPercentNotesMember_1738" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_1737" xlink:to="Locator_cop_EightPointTwoPercentNotesMember_1738" order="12.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_1739" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EightPointOneTwoFivePercentNotesMember" xlink:label="Locator_cop_EightPointOneTwoFivePercentNotesMember_1740" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_1739" xlink:to="Locator_cop_EightPointOneTwoFivePercentNotesMember_1740" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_1741" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SevenPointNinePercentNotesMember" xlink:label="Locator_cop_SevenPointNinePercentNotesMember_1742" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_1741" xlink:to="Locator_cop_SevenPointNinePercentNotesMember_1742" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_1743" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SevenPointEightPercentNotesMember" xlink:label="Locator_cop_SevenPointEightPercentNotesMember_1744" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_1743" xlink:to="Locator_cop_SevenPointEightPercentNotesMember_1744" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_1745" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SevenPointSixFivePercentNotesMember" xlink:label="Locator_cop_SevenPointSixFivePercentNotesMember_1746" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_1745" xlink:to="Locator_cop_SevenPointSixFivePercentNotesMember_1746" order="13.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_1747" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FourPointTwoPercentNotesMember" xlink:label="Locator_cop_FourPointTwoPercentNotesMember_1748" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_1747" xlink:to="Locator_cop_FourPointTwoPercentNotesMember_1748" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_1749" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FourPointOneFivePercentNotesMember" xlink:label="Locator_cop_FourPointOneFivePercentNotesMember_1750" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_1749" xlink:to="Locator_cop_FourPointOneFivePercentNotesMember_1750" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_1751" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ThreePointThreeFivePercentNotesMember" xlink:label="Locator_cop_ThreePointThreeFivePercentNotesMember_1752" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_1751" xlink:to="Locator_cop_ThreePointThreeFivePercentNotesMember_1752" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_1753" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_TwoPointEightSevenFivePercentNotesMember" xlink:label="Locator_cop_TwoPointEightSevenFivePercentNotesMember_1754" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_1753" xlink:to="Locator_cop_TwoPointEightSevenFivePercentNotesMember_1754" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_1755" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_TwoPointFourPercentNotesMember" xlink:label="Locator_cop_TwoPointFourPercentNotesMember_1756" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_1755" xlink:to="Locator_cop_TwoPointFourPercentNotesMember_1756" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_1757" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_TwoPointTwoPercentNotesMember" xlink:label="Locator_cop_TwoPointTwoPercentNotesMember_1758" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_1757" xlink:to="Locator_cop_TwoPointTwoPercentNotesMember_1758" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_1759" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FloatingRateNoteOnePointTwoFourPercentToOnePointSevenFivePercentMember" xlink:label="Locator_cop_FloatingRateNoteOnePointTwoFourPercentToOnePointSevenFivePercentMember_1760" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_1759" xlink:to="Locator_cop_FloatingRateNoteOnePointTwoFourPercentToOnePointSevenFivePercentMember_1760" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="Locator_us-gaap_DebtInstrumentTable_1761" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodAxis_1762" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DebtInstrumentTable_1761" xlink:to="Locator_us-gaap_DebtInstrumentRedemptionPeriodAxis_1762" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodAxis_1763" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1764" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodAxis_1763" xlink:to="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1764" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1765" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodOneMember" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodOneMember_1766" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1765" xlink:to="Locator_us-gaap_DebtInstrumentRedemptionPeriodOneMember_1766" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1767" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodFourMember" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodFourMember_1768" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1767" xlink:to="Locator_us-gaap_DebtInstrumentRedemptionPeriodFourMember_1768" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1769" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodFiveMember" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodFiveMember_1770" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1769" xlink:to="Locator_us-gaap_DebtInstrumentRedemptionPeriodFiveMember_1770" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1771" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodSixMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodSixMember_1772" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1771" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodSixMember_1772" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1773" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodSevenMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodSevenMember_1774" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1773" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodSevenMember_1774" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1775" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodEightMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodEightMember_1776" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1775" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodEightMember_1776" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1777" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodTenMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodTenMember_1778" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1777" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodTenMember_1778" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1779" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodThirteenMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodThirteenMember_1780" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1779" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodThirteenMember_1780" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1781" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtinstrumentRedemptionPeriodSeventeenMember" xlink:label="Locator_cop_DebtinstrumentRedemptionPeriodSeventeenMember_1782" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1781" xlink:to="Locator_cop_DebtinstrumentRedemptionPeriodSeventeenMember_1782" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1783" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodThirtyMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodThirtyMember_1784" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1783" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodThirtyMember_1784" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1785" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodThreeMember" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodThreeMember_1786" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_1785" xlink:to="Locator_us-gaap_DebtInstrumentRedemptionPeriodThreeMember_1786" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="Locator_us-gaap_DebtInstrumentTable_1787" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="Locator_us-gaap_LongtermDebtTypeAxis_1788" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DebtInstrumentTable_1787" xlink:to="Locator_us-gaap_LongtermDebtTypeAxis_1788" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="Locator_us-gaap_LongtermDebtTypeAxis_1789" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="Locator_us-gaap_LongtermDebtTypeDomain_1790" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_LongtermDebtTypeAxis_1789" xlink:to="Locator_us-gaap_LongtermDebtTypeDomain_1790" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="Locator_us-gaap_LongtermDebtTypeDomain_1791" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnsecuredDebtMember" xlink:label="Locator_us-gaap_UnsecuredDebtMember_1792" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LongtermDebtTypeDomain_1791" xlink:to="Locator_us-gaap_UnsecuredDebtMember_1792" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="Locator_us-gaap_LongtermDebtTypeDomain_1793" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FloatingRateNotesMember" xlink:label="Locator_cop_FloatingRateNotesMember_1794" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LongtermDebtTypeDomain_1793" xlink:to="Locator_cop_FloatingRateNotesMember_1794" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="Locator_us-gaap_LongtermDebtTypeDomain_1795" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_VariableRateDebtBondsMember" xlink:label="Locator_cop_VariableRateDebtBondsMember_1796" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LongtermDebtTypeDomain_1795" xlink:to="Locator_cop_VariableRateDebtBondsMember_1796" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityAxis" xlink:label="Locator_us-gaap_LineOfCreditFacilityAxis_1805" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:label="Locator_us-gaap_LineOfCreditFacilityLenderDomain_1806" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_LineOfCreditFacilityAxis_1805" xlink:to="Locator_us-gaap_LineOfCreditFacilityLenderDomain_1806" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityAxis" xlink:label="Locator_us-gaap_LineOfCreditFacilityAxis_1807" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:label="Locator_us-gaap_LineOfCreditFacilityLenderDomain_1808" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_LineOfCreditFacilityAxis_1807" xlink:to="Locator_us-gaap_LineOfCreditFacilityLenderDomain_1808" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:label="Locator_us-gaap_LineOfCreditFacilityLenderDomain_1809" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ConocoPhilipsCommericalPaperProgramMember" xlink:label="Locator_cop_ConocoPhilipsCommericalPaperProgramMember_1810" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LineOfCreditFacilityLenderDomain_1809" xlink:to="Locator_cop_ConocoPhilipsCommericalPaperProgramMember_1810" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtLineItems" xlink:label="Locator_us-gaap_ShortTermDebtLineItems_1811" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShortTermDebtTable" xlink:label="Locator_us-gaap_ScheduleOfShortTermDebtTable_1812" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_ShortTermDebtLineItems_1811" xlink:to="Locator_us-gaap_ScheduleOfShortTermDebtTable_1812" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShortTermDebtTable" xlink:label="Locator_us-gaap_ScheduleOfShortTermDebtTable_1813" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityAxis" xlink:label="Locator_us-gaap_LineOfCreditFacilityAxis_1814" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfShortTermDebtTable_1813" xlink:to="Locator_us-gaap_LineOfCreditFacilityAxis_1814" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShortTermDebtTable" xlink:label="Locator_us-gaap_ScheduleOfShortTermDebtTable_1815" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="Locator_us-gaap_CreditFacilityAxis_1816" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfShortTermDebtTable_1815" xlink:to="Locator_us-gaap_CreditFacilityAxis_1816" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="Locator_us-gaap_CreditFacilityAxis_1797" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="Locator_us-gaap_CreditFacilityDomain_1798" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_CreditFacilityAxis_1797" xlink:to="Locator_us-gaap_CreditFacilityDomain_1798" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="Locator_us-gaap_CreditFacilityAxis_1799" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="Locator_us-gaap_CreditFacilityDomain_1800" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_CreditFacilityAxis_1799" xlink:to="Locator_us-gaap_CreditFacilityDomain_1800" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="Locator_us-gaap_CreditFacilityDomain_1801" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="Locator_us-gaap_RevolvingCreditFacilityMember_1802" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_CreditFacilityDomain_1801" xlink:to="Locator_us-gaap_RevolvingCreditFacilityMember_1802" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="Locator_us-gaap_CreditFacilityDomain_1803" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LetterOfCreditMember" xlink:label="Locator_us-gaap_LetterOfCreditMember_1804" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_CreditFacilityDomain_1803" xlink:to="Locator_us-gaap_LetterOfCreditMember_1804" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShortTermDebtTable" xlink:label="Locator_us-gaap_ScheduleOfShortTermDebtTable_1817" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="Locator_us-gaap_ShortTermDebtTypeAxis_1818" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfShortTermDebtTable_1817" xlink:to="Locator_us-gaap_ShortTermDebtTypeAxis_1818" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="Locator_us-gaap_ShortTermDebtTypeAxis_1819" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="Locator_us-gaap_ShortTermDebtTypeDomain_1820" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_ShortTermDebtTypeAxis_1819" xlink:to="Locator_us-gaap_ShortTermDebtTypeDomain_1820" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="Locator_us-gaap_ShortTermDebtTypeAxis_1821" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="Locator_us-gaap_ShortTermDebtTypeDomain_1822" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_ShortTermDebtTypeAxis_1821" xlink:to="Locator_us-gaap_ShortTermDebtTypeDomain_1822" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="Locator_us-gaap_ShortTermDebtTypeDomain_1823" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialPaperMember" xlink:label="Locator_us-gaap_CommercialPaperMember_1824" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShortTermDebtTypeDomain_1823" xlink:to="Locator_us-gaap_CommercialPaperMember_1824" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtLineItems" xlink:label="Locator_us-gaap_ShortTermDebtLineItems_1825" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="Locator_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_1826" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShortTermDebtLineItems_1825" xlink:to="Locator_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_1826" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtLineItems" xlink:label="Locator_us-gaap_ShortTermDebtLineItems_1827" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CommercialPaperProgram" xlink:label="Locator_cop_CommercialPaperProgram_1828" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShortTermDebtLineItems_1827" xlink:to="Locator_cop_CommercialPaperProgram_1828" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtLineItems" xlink:label="Locator_us-gaap_ShortTermDebtLineItems_1829" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtTerms" xlink:label="Locator_us-gaap_ShortTermDebtTerms_1830" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShortTermDebtLineItems_1829" xlink:to="Locator_us-gaap_ShortTermDebtTerms_1830" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtLineItems" xlink:label="Locator_us-gaap_ShortTermDebtLineItems_1831" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases" xlink:label="Locator_us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases_1832" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShortTermDebtLineItems_1831" xlink:to="Locator_us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases_1832" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtLineItems" xlink:label="Locator_us-gaap_ShortTermDebtLineItems_1833" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_MinimumLimitOfDebtForCrossDefaultProvision" xlink:label="Locator_cop_MinimumLimitOfDebtForCrossDefaultProvision_1834" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShortTermDebtLineItems_1833" xlink:to="Locator_cop_MinimumLimitOfDebtForCrossDefaultProvision_1834" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtLineItems" xlink:label="Locator_us-gaap_ShortTermDebtLineItems_1835" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCredit" xlink:label="Locator_us-gaap_LineOfCredit_1836" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShortTermDebtLineItems_1835" xlink:to="Locator_us-gaap_LineOfCredit_1836" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtLineItems" xlink:label="Locator_us-gaap_ShortTermDebtLineItems_1837" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LettersOfCreditOutstandingAmount" xlink:label="Locator_us-gaap_LettersOfCreditOutstandingAmount_1838" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShortTermDebtLineItems_1837" xlink:to="Locator_us-gaap_LettersOfCreditOutstandingAmount_1838" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtLineItems" xlink:label="Locator_us-gaap_ShortTermDebtLineItems_1839" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfCommercialPaper" xlink:label="Locator_us-gaap_RepaymentsOfCommercialPaper_1840" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShortTermDebtLineItems_1839" xlink:to="Locator_us-gaap_RepaymentsOfCommercialPaper_1840" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtLineItems" xlink:label="Locator_us-gaap_ShortTermDebtLineItems_1841" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialPaper" xlink:label="Locator_us-gaap_CommercialPaper_1842" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShortTermDebtLineItems_1841" xlink:to="Locator_us-gaap_CommercialPaper_1842" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtLineItems" xlink:label="Locator_us-gaap_ShortTermDebtLineItems_1843" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:label="Locator_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_1844" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShortTermDebtLineItems_1843" xlink:to="Locator_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_1844" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="Locator_us-gaap_SubsequentEventLineItems_1845" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTable" xlink:label="Locator_us-gaap_SubsequentEventTable_1846" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_SubsequentEventLineItems_1845" xlink:to="Locator_us-gaap_SubsequentEventTable_1846" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTable" xlink:label="Locator_us-gaap_SubsequentEventTable_1847" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="Locator_us-gaap_SubsequentEventTypeAxis_1848" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_SubsequentEventTable_1847" xlink:to="Locator_us-gaap_SubsequentEventTypeAxis_1848" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTable" xlink:label="Locator_us-gaap_SubsequentEventTable_1849" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="Locator_us-gaap_BusinessAcquisitionAxis_1850" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_SubsequentEventTable_1849" xlink:to="Locator_us-gaap_BusinessAcquisitionAxis_1850" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="Locator_us-gaap_SubsequentEventLineItems_1851" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt" xlink:label="Locator_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_1852" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SubsequentEventLineItems_1851" xlink:to="Locator_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_1852" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="Locator_us-gaap_SubsequentEventLineItems_1853" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BusinessCombinationNotesOfferedInExchange" xlink:label="Locator_cop_BusinessCombinationNotesOfferedInExchange_1854" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SubsequentEventLineItems_1853" xlink:to="Locator_cop_BusinessCombinationNotesOfferedInExchange_1854" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="Locator_us-gaap_SubsequentEventLineItems_1855" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BusinessCombinationPercentOfNotesOfferedTenderedAndExchangedForNewDebt" xlink:label="Locator_cop_BusinessCombinationPercentOfNotesOfferedTenderedAndExchangedForNewDebt_1856" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SubsequentEventLineItems_1855" xlink:to="Locator_cop_BusinessCombinationPercentOfNotesOfferedTenderedAndExchangedForNewDebt_1856" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="Locator_us-gaap_SubsequentEventLineItems_1857" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BusinessCombinationTenderedAndExchangedNotesForNewDebt" xlink:label="Locator_cop_BusinessCombinationTenderedAndExchangedNotesForNewDebt_1858" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SubsequentEventLineItems_1857" xlink:to="Locator_cop_BusinessCombinationTenderedAndExchangedNotesForNewDebt_1858" order="4.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureEmployeeBenefitPlansTables">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="Locator_us-gaap_AwardTypeAxis_2077" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2078" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_AwardTypeAxis_2077" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2078" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2079" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PerformanceShareProgramMember" xlink:label="Locator_cop_PerformanceShareProgramMember_2080" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2079" xlink:to="Locator_cop_PerformanceShareProgramMember_2080" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PerformanceShareProgramMember" xlink:label="Locator_cop_PerformanceShareProgramMember_2081" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_RSUStockSettledShareMember" xlink:label="Locator_cop_RSUStockSettledShareMember_2082" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_PerformanceShareProgramMember_2081" xlink:to="Locator_cop_RSUStockSettledShareMember_2082" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PerformanceShareProgramMember" xlink:label="Locator_cop_PerformanceShareProgramMember_2083" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_RSUCashSettledMember" xlink:label="Locator_cop_RSUCashSettledMember_2084" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_PerformanceShareProgramMember_2083" xlink:to="Locator_cop_RSUCashSettledMember_2084" order="2.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureEmployeeBenefitPlansBenefitPaymentsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2117" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_2118" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2117" xlink:to="Locator_us-gaap_DomesticPlanMember_2118" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_2119" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_US" xlink:label="Locator_country_US_2120" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DomesticPlanMember_2119" xlink:to="Locator_country_US_2120" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2121" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="Locator_us-gaap_ForeignPlanMember_2122" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2121" xlink:to="Locator_us-gaap_ForeignPlanMember_2122" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_2123" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_2124" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_2123" xlink:to="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_2124" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_2125" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_PensionPlansDefinedBenefitMember_2126" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_2125" xlink:to="Locator_us-gaap_PensionPlansDefinedBenefitMember_2126" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2127" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_2128" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2127" xlink:to="Locator_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_2128" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_2129" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths" xlink:label="Locator_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_2130" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_2129" xlink:to="Locator_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_2130" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_2131" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo" xlink:label="Locator_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_2132" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_2131" xlink:to="Locator_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_2132" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_2133" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree" xlink:label="Locator_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_2134" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_2133" xlink:to="Locator_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_2134" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_2135" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour" xlink:label="Locator_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_2136" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_2135" xlink:to="Locator_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_2136" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_2137" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive" xlink:label="Locator_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_2138" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_2137" xlink:to="Locator_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_2138" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_2139" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter" xlink:label="Locator_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_2140" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_2139" xlink:to="Locator_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_2140" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2141" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2142" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2141" xlink:to="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2142" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2143" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_2144" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2143" xlink:to="Locator_us-gaap_RetirementPlanTypeAxis_2144" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_2145" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_2146" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanTypeAxis_2145" xlink:to="Locator_us-gaap_RetirementPlanTypeDomain_2146" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_2147" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_2148" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_RetirementPlanTypeAxis_2147" xlink:to="Locator_us-gaap_RetirementPlanTypeDomain_2148" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2149" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_2150" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2149" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationAxis_2150" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_2151" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2152" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationAxis_2151" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2152" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureEmployeeBenefitPlansStockOptionActivityDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="Locator_us-gaap_AwardTypeAxis_2237" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2238" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_AwardTypeAxis_2237" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2238" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2239" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="Locator_us-gaap_EmployeeStockOptionMember_2240" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2239" xlink:to="Locator_us-gaap_EmployeeStockOptionMember_2240" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="Locator_us-gaap_PlanNameAxis_2241" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="Locator_us-gaap_PlanNameDomain_2242" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_PlanNameAxis_2241" xlink:to="Locator_us-gaap_PlanNameDomain_2242" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="Locator_us-gaap_PlanNameDomain_2243" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_TwentyFourteenOmnibusStockAndPerformanceIncentivePlanOfConocoPhillipsMember" xlink:label="Locator_cop_TwentyFourteenOmnibusStockAndPerformanceIncentivePlanOfConocoPhillipsMember_2244" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanNameDomain_2243" xlink:to="Locator_cop_TwentyFourteenOmnibusStockAndPerformanceIncentivePlanOfConocoPhillipsMember_2244" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2245" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1" xlink:label="Locator_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1_2246" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2245" xlink:to="Locator_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1_2246" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2247" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_WeightedAverageRemainingContractualTermOfVestedOptions" xlink:label="Locator_cop_WeightedAverageRemainingContractualTermOfVestedOptions_2248" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2247" xlink:to="Locator_cop_WeightedAverageRemainingContractualTermOfVestedOptions_2248" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2249" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1" xlink:label="Locator_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1_2250" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2249" xlink:to="Locator_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1_2250" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2251" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2252" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2251" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2252" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2253" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_2254" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2253" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_2254" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2255" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="Locator_us-gaap_ProceedsFromStockOptionsExercised_2256" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2255" xlink:to="Locator_us-gaap_ProceedsFromStockOptionsExercised_2256" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2257" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions" xlink:label="Locator_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions_2258" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2257" xlink:to="Locator_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions_2258" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2259" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="Locator_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_2260" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2259" xlink:to="Locator_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_2260" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2261" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2262" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2261" xlink:to="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2262" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2263" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="Locator_us-gaap_PlanNameAxis_2264" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2263" xlink:to="Locator_us-gaap_PlanNameAxis_2264" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2265" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="Locator_us-gaap_AwardTypeAxis_2266" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2265" xlink:to="Locator_us-gaap_AwardTypeAxis_2266" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureEmployeeBenefitPlansStockUnitActivityDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="Locator_us-gaap_AwardTypeAxis_2325" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2326" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_AwardTypeAxis_2325" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2326" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="Locator_us-gaap_AwardTypeAxis_2327" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2328" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_AwardTypeAxis_2327" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2328" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2329" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="Locator_us-gaap_RestrictedStockUnitsRSUMember_2330" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2329" xlink:to="Locator_us-gaap_RestrictedStockUnitsRSUMember_2330" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="Locator_us-gaap_RestrictedStockUnitsRSUMember_2331" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_RSUStockSettledShareMember" xlink:label="Locator_cop_RSUStockSettledShareMember_2332" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestrictedStockUnitsRSUMember_2331" xlink:to="Locator_cop_RSUStockSettledShareMember_2332" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="Locator_us-gaap_RestrictedStockUnitsRSUMember_2333" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_RSUCashSettledMember" xlink:label="Locator_cop_RSUCashSettledMember_2334" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestrictedStockUnitsRSUMember_2333" xlink:to="Locator_cop_RSUCashSettledMember_2334" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2335" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummaryOfStockUnitActivityAbstract" xlink:label="Locator_cop_SummaryOfStockUnitActivityAbstract_2336" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2335" xlink:to="Locator_cop_SummaryOfStockUnitActivityAbstract_2336" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummaryOfStockUnitActivityAbstract" xlink:label="Locator_cop_SummaryOfStockUnitActivityAbstract_2337" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardInstrumentsOtherThanOptionsOutstandingNumber" xlink:label="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardInstrumentsOtherThanOptionsOutstandingNumber_2338" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummaryOfStockUnitActivityAbstract_2337" xlink:to="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardInstrumentsOtherThanOptionsOutstandingNumber_2338" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummaryOfStockUnitActivityAbstract" xlink:label="Locator_cop_SummaryOfStockUnitActivityAbstract_2339" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_2340" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummaryOfStockUnitActivityAbstract_2339" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_2340" order="2.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummaryOfStockUnitActivityAbstract" xlink:label="Locator_cop_SummaryOfStockUnitActivityAbstract_2341" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_2342" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummaryOfStockUnitActivityAbstract_2341" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_2342" order="3.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummaryOfStockUnitActivityAbstract" xlink:label="Locator_cop_SummaryOfStockUnitActivityAbstract_2343" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_2344" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummaryOfStockUnitActivityAbstract_2343" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_2344" order="4.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummaryOfStockUnitActivityAbstract" xlink:label="Locator_cop_SummaryOfStockUnitActivityAbstract_2345" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_2346" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummaryOfStockUnitActivityAbstract_2345" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_2346" order="6.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummaryOfStockUnitActivityAbstract" xlink:label="Locator_cop_SummaryOfStockUnitActivityAbstract_2347" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_2348" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummaryOfStockUnitActivityAbstract_2347" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_2348" order="7.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummaryOfStockUnitActivityAbstract" xlink:label="Locator_cop_SummaryOfStockUnitActivityAbstract_2349" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2350" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummaryOfStockUnitActivityAbstract_2349" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2350" order="8.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummaryOfStockUnitActivityAbstract" xlink:label="Locator_cop_SummaryOfStockUnitActivityAbstract_2351" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_2352" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummaryOfStockUnitActivityAbstract_2351" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_2352" order="9.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummaryOfStockUnitActivityAbstract" xlink:label="Locator_cop_SummaryOfStockUnitActivityAbstract_2353" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIssuedInPeriodWeightedAverageGrantDateFairValue" xlink:label="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIssuedInPeriodWeightedAverageGrantDateFairValue_2354" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummaryOfStockUnitActivityAbstract_2353" xlink:to="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIssuedInPeriodWeightedAverageGrantDateFairValue_2354" order="10.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummaryOfStockUnitActivityAbstract" xlink:label="Locator_cop_SummaryOfStockUnitActivityAbstract_2355" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsNonVestedWeightedAverageGrantDateFairValue" xlink:label="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsNonVestedWeightedAverageGrantDateFairValue_2356" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummaryOfStockUnitActivityAbstract_2355" xlink:to="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsNonVestedWeightedAverageGrantDateFairValue_2356" order="12.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummaryOfStockUnitActivityAbstract" xlink:label="Locator_cop_SummaryOfStockUnitActivityAbstract_2357" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_2358" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummaryOfStockUnitActivityAbstract_2357" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_2358" order="13.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummaryOfStockUnitActivityAbstract" xlink:label="Locator_cop_SummaryOfStockUnitActivityAbstract_2359" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_2360" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummaryOfStockUnitActivityAbstract_2359" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_2360" order="14.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2361" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2362" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2361" xlink:to="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2362" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2363" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="Locator_us-gaap_AwardTypeAxis_2364" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2363" xlink:to="Locator_us-gaap_AwardTypeAxis_2364" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2365" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployeeBenefitPlansAdditionalTextualAbstract" xlink:label="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2366" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2365" xlink:to="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2366" order="2.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployeeBenefitPlansAdditionalTextualAbstract" xlink:label="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2367" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="Locator_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_2368" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2367" xlink:to="Locator_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_2368" order="2.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployeeBenefitPlansAdditionalTextualAbstract" xlink:label="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2369" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployeeServiceShareBasedCompensationUnrecognizedCompensationCostsOnNonvestedAwardLongestWeightedAveragePeriodOfRecognition" xlink:label="Locator_cop_EmployeeServiceShareBasedCompensationUnrecognizedCompensationCostsOnNonvestedAwardLongestWeightedAveragePeriodOfRecognition_2370" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2369" xlink:to="Locator_cop_EmployeeServiceShareBasedCompensationUnrecognizedCompensationCostsOnNonvestedAwardLongestWeightedAveragePeriodOfRecognition_2370" order="3.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployeeBenefitPlansAdditionalTextualAbstract" xlink:label="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2371" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="Locator_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_2372" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2371" xlink:to="Locator_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_2372" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployeeBenefitPlansAdditionalTextualAbstract" xlink:label="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2373" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2374" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2373" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2374" order="4.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/EmployeeBenefitPlansPerformanceShareActivityDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="Locator_us-gaap_AwardTypeAxis_2425" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2426" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_AwardTypeAxis_2425" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2426" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2427" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="Locator_us-gaap_PerformanceSharesMember_2428" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2427" xlink:to="Locator_us-gaap_PerformanceSharesMember_2428" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="Locator_us-gaap_PerformanceSharesMember_2429" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PSUStockSettledMember" xlink:label="Locator_cop_PSUStockSettledMember_2430" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PerformanceSharesMember_2429" xlink:to="Locator_cop_PSUStockSettledMember_2430" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="Locator_us-gaap_PerformanceSharesMember_2431" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PSUCashSettledProgramMember" xlink:label="Locator_cop_PSUCashSettledProgramMember_2432" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PerformanceSharesMember_2431" xlink:to="Locator_cop_PSUCashSettledProgramMember_2432" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="Locator_srt_RangeAxis_2433" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_2434" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_RangeAxis_2433" xlink:to="Locator_srt_RangeMember_2434" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_2435" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember" xlink:label="Locator_srt_MinimumMember_2436" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RangeMember_2435" xlink:to="Locator_srt_MinimumMember_2436" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_2437" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember" xlink:label="Locator_srt_MaximumMember_2438" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RangeMember_2437" xlink:to="Locator_srt_MaximumMember_2438" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2439" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesOfPerformanceShareProgramActivityAbstract" xlink:label="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2440" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2439" xlink:to="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2440" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesOfPerformanceShareProgramActivityAbstract" xlink:label="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2441" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardInstrumentsOtherThanOptionsOutstandingNumber" xlink:label="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardInstrumentsOtherThanOptionsOutstandingNumber_2442" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2441" xlink:to="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardInstrumentsOtherThanOptionsOutstandingNumber_2442" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesOfPerformanceShareProgramActivityAbstract" xlink:label="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2443" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_2444" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2443" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_2444" order="2.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesOfPerformanceShareProgramActivityAbstract" xlink:label="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2445" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_2446" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2445" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_2446" order="3.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesOfPerformanceShareProgramActivityAbstract" xlink:label="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2447" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_2448" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2447" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_2448" order="4.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesOfPerformanceShareProgramActivityAbstract" xlink:label="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2449" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_2450" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2449" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_2450" order="6.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesOfPerformanceShareProgramActivityAbstract" xlink:label="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2451" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_2452" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2451" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_2452" order="7.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesOfPerformanceShareProgramActivityAbstract" xlink:label="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2453" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2454" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2453" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2454" order="8.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesOfPerformanceShareProgramActivityAbstract" xlink:label="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2455" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_2456" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2455" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_2456" order="9.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesOfPerformanceShareProgramActivityAbstract" xlink:label="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2457" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIssuedInPeriodWeightedAverageGrantDateFairValue" xlink:label="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIssuedInPeriodWeightedAverageGrantDateFairValue_2458" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2457" xlink:to="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIssuedInPeriodWeightedAverageGrantDateFairValue_2458" order="10.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesOfPerformanceShareProgramActivityAbstract" xlink:label="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2459" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsNonVestedWeightedAverageGrantDateFairValue" xlink:label="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsNonVestedWeightedAverageGrantDateFairValue_2460" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2459" xlink:to="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsNonVestedWeightedAverageGrantDateFairValue_2460" order="12.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesOfPerformanceShareProgramActivityAbstract" xlink:label="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2461" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_2462" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesOfPerformanceShareProgramActivityAbstract_2461" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_2462" order="13.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2463" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2464" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2463" xlink:to="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2464" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2465" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="Locator_srt_RangeAxis_2466" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2465" xlink:to="Locator_srt_RangeAxis_2466" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2467" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="Locator_us-gaap_AwardTypeAxis_2468" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2467" xlink:to="Locator_us-gaap_AwardTypeAxis_2468" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2469" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployeeBenefitPlansAdditionalTextualAbstract" xlink:label="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2470" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2469" xlink:to="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2470" order="2.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployeeBenefitPlansAdditionalTextualAbstract" xlink:label="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2471" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="Locator_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_2472" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2471" xlink:to="Locator_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_2472" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployeeBenefitPlansAdditionalTextualAbstract" xlink:label="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2473" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2474" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2473" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2474" order="2.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/EmployeeBenefitPlansRestrictedSharesAndUnitsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="Locator_us-gaap_AwardTypeAxis_2533" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2534" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_AwardTypeAxis_2533" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2534" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2535" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="Locator_us-gaap_RestrictedStockUnitsRSUMember_2536" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2535" xlink:to="Locator_us-gaap_RestrictedStockUnitsRSUMember_2536" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2537" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2538" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2537" xlink:to="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2538" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2539" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="Locator_us-gaap_AwardTypeAxis_2540" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2539" xlink:to="Locator_us-gaap_AwardTypeAxis_2540" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2541" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:label="Locator_us-gaap_StatementOperatingActivitiesSegmentAxis_2542" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2541" xlink:to="Locator_us-gaap_StatementOperatingActivitiesSegmentAxis_2542" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:label="Locator_us-gaap_StatementOperatingActivitiesSegmentAxis_2543" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="Locator_us-gaap_SegmentOperatingActivitiesDomain_2544" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_StatementOperatingActivitiesSegmentAxis_2543" xlink:to="Locator_us-gaap_SegmentOperatingActivitiesDomain_2544" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:label="Locator_us-gaap_StatementOperatingActivitiesSegmentAxis_2545" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="Locator_us-gaap_SegmentOperatingActivitiesDomain_2546" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_StatementOperatingActivitiesSegmentAxis_2545" xlink:to="Locator_us-gaap_SegmentOperatingActivitiesDomain_2546" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="Locator_us-gaap_SegmentOperatingActivitiesDomain_2547" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDiscontinuedOperationsMember" xlink:label="Locator_us-gaap_SegmentDiscontinuedOperationsMember_2548" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentOperatingActivitiesDomain_2547" xlink:to="Locator_us-gaap_SegmentDiscontinuedOperationsMember_2548" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2549" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract" xlink:label="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2550" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2549" xlink:to="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2550" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract" xlink:label="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2551" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardInstrumentsOtherThanOptionsOutstandingNumber" xlink:label="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardInstrumentsOtherThanOptionsOutstandingNumber_2552" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2551" xlink:to="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardInstrumentsOtherThanOptionsOutstandingNumber_2552" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract" xlink:label="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2553" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_2554" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2553" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_2554" order="2.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract" xlink:label="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2555" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_2556" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2555" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_2556" order="3.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract" xlink:label="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2557" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_2558" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2557" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_2558" order="4.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract" xlink:label="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2559" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_2560" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2559" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_2560" order="6.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract" xlink:label="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2561" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_2562" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2561" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_2562" order="7.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract" xlink:label="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2563" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2564" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2563" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2564" order="8.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract" xlink:label="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2565" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_2566" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2565" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_2566" order="9.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract" xlink:label="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2567" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIssuedInPeriodWeightedAverageGrantDateFairValue" xlink:label="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIssuedInPeriodWeightedAverageGrantDateFairValue_2568" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2567" xlink:to="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIssuedInPeriodWeightedAverageGrantDateFairValue_2568" order="10.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract" xlink:label="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2569" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsNonVestedWeightedAverageGrantDateFairValue" xlink:label="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsNonVestedWeightedAverageGrantDateFairValue_2570" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2569" xlink:to="Locator_cop_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsNonVestedWeightedAverageGrantDateFairValue_2570" order="12.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract" xlink:label="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2571" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_2572" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_SummarizesAggregateActivityOfTheseRestrictedSharesAndUnitsAbstract_2571" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_2572" order="13.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2573" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployeeBenefitPlansAdditionalTextualAbstract" xlink:label="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2574" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2573" xlink:to="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2574" order="2.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployeeBenefitPlansAdditionalTextualAbstract" xlink:label="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2575" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="Locator_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_2576" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2575" xlink:to="Locator_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_2576" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployeeBenefitPlansAdditionalTextualAbstract" xlink:label="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2577" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2578" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_EmployeeBenefitPlansAdditionalTextualAbstract_2577" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2578" order="2.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/EmployeeBenefitsPlansTextualDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2619" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="Locator_us-gaap_FairValueInputsLevel3Member_2620" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2619" xlink:to="Locator_us-gaap_FairValueInputsLevel3Member_2620" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2621" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesMember" xlink:label="Locator_us-gaap_DebtSecuritiesMember_2622" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2621" xlink:to="Locator_us-gaap_DebtSecuritiesMember_2622" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2623" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InsuranceContractRightsAndObligationsFairValueOptionMember" xlink:label="Locator_us-gaap_InsuranceContractRightsAndObligationsFairValueOptionMember_2624" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2623" xlink:to="Locator_us-gaap_InsuranceContractRightsAndObligationsFairValueOptionMember_2624" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanFundingStatusDomain" xlink:label="Locator_us-gaap_RetirementPlanFundingStatusDomain_2625" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnfundedPlanMember" xlink:label="Locator_us-gaap_UnfundedPlanMember_2626" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanFundingStatusDomain_2625" xlink:to="Locator_us-gaap_UnfundedPlanMember_2626" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanNameDomain" xlink:label="Locator_us-gaap_RetirementPlanNameDomain_2627" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PrudentialBenefitObligationMember" xlink:label="Locator_cop_PrudentialBenefitObligationMember_2628" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanNameDomain_2627" xlink:to="Locator_cop_PrudentialBenefitObligationMember_2628" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2629" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_2630" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2629" xlink:to="Locator_us-gaap_DomesticPlanMember_2630" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_2631" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_US" xlink:label="Locator_country_US_2632" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DomesticPlanMember_2631" xlink:to="Locator_country_US_2632" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2633" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="Locator_us-gaap_ForeignPlanMember_2634" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2633" xlink:to="Locator_us-gaap_ForeignPlanMember_2634" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="Locator_us-gaap_ForeignPlanMember_2635" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EuropeMember" xlink:label="Locator_srt_EuropeMember_2636" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ForeignPlanMember_2635" xlink:to="Locator_srt_EuropeMember_2636" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusDomain" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusDomain_2637" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_QualifiedPlanMember" xlink:label="Locator_us-gaap_QualifiedPlanMember_2638" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTaxStatusDomain_2637" xlink:to="Locator_us-gaap_QualifiedPlanMember_2638" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusDomain" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusDomain_2639" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NonqualifiedPlanMember" xlink:label="Locator_us-gaap_NonqualifiedPlanMember_2640" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTaxStatusDomain_2639" xlink:to="Locator_us-gaap_NonqualifiedPlanMember_2640" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_2641" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_2642" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_2641" xlink:to="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_2642" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_2643" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_PensionPlansDefinedBenefitMember_2644" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_2643" xlink:to="Locator_us-gaap_PensionPlansDefinedBenefitMember_2644" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="Locator_srt_RangeAxis_2645" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_2646" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_RangeAxis_2645" xlink:to="Locator_srt_RangeMember_2646" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_2647" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember" xlink:label="Locator_srt_MinimumMember_2648" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RangeMember_2647" xlink:to="Locator_srt_MinimumMember_2648" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_2649" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember" xlink:label="Locator_srt_MaximumMember_2650" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RangeMember_2649" xlink:to="Locator_srt_MaximumMember_2650" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2651" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments" xlink:label="Locator_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_2652" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2651" xlink:to="Locator_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_2652" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2653" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanSpecialTerminationBenefits" xlink:label="Locator_us-gaap_DefinedBenefitPlanSpecialTerminationBenefits_2654" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2653" xlink:to="Locator_us-gaap_DefinedBenefitPlanSpecialTerminationBenefits_2654" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2655" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation" xlink:label="Locator_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_2656" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2655" xlink:to="Locator_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_2656" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2657" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets" xlink:label="Locator_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_2658" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2657" xlink:to="Locator_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_2658" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2659" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAmendments" xlink:label="Locator_us-gaap_DefinedBenefitPlanPlanAmendments_2660" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2659" xlink:to="Locator_us-gaap_DefinedBenefitPlanPlanAmendments_2660" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2661" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax_2662" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2661" xlink:to="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax_2662" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2663" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SpecialPensionTerminationBenefitsRecoverableFromPartner" xlink:label="Locator_cop_SpecialPensionTerminationBenefitsRecoverableFromPartner_2664" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2663" xlink:to="Locator_cop_SpecialPensionTerminationBenefitsRecoverableFromPartner_2664" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2665" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringReserve" xlink:label="Locator_us-gaap_RestructuringReserve_2666" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2665" xlink:to="Locator_us-gaap_RestructuringReserve_2666" order="12.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2667" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1" xlink:label="Locator_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_2668" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2667" xlink:to="Locator_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_2668" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2669" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear" xlink:label="Locator_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_2670" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2669" xlink:to="Locator_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_2670" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2671" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets" xlink:label="Locator_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_2672" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2671" xlink:to="Locator_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_2672" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2673" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationPeriodIncreaseDecrease" xlink:label="Locator_us-gaap_DefinedBenefitPlanBenefitObligationPeriodIncreaseDecrease_2674" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2673" xlink:to="Locator_us-gaap_DefinedBenefitPlanBenefitObligationPeriodIncreaseDecrease_2674" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2675" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2676" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2675" xlink:to="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2676" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2677" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="Locator_srt_RangeAxis_2678" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2677" xlink:to="Locator_srt_RangeAxis_2678" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2679" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusAxis" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusAxis_2680" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2679" xlink:to="Locator_us-gaap_RetirementPlanTaxStatusAxis_2680" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusAxis" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusAxis_2681" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusDomain" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusDomain_2682" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanTaxStatusAxis_2681" xlink:to="Locator_us-gaap_RetirementPlanTaxStatusDomain_2682" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusAxis" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusAxis_2683" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusDomain" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusDomain_2684" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_RetirementPlanTaxStatusAxis_2683" xlink:to="Locator_us-gaap_RetirementPlanTaxStatusDomain_2684" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2685" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanNameAxis" xlink:label="Locator_us-gaap_RetirementPlanNameAxis_2686" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2685" xlink:to="Locator_us-gaap_RetirementPlanNameAxis_2686" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanNameAxis" xlink:label="Locator_us-gaap_RetirementPlanNameAxis_2687" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanNameDomain" xlink:label="Locator_us-gaap_RetirementPlanNameDomain_2688" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanNameAxis_2687" xlink:to="Locator_us-gaap_RetirementPlanNameDomain_2688" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanNameAxis" xlink:label="Locator_us-gaap_RetirementPlanNameAxis_2689" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanNameDomain" xlink:label="Locator_us-gaap_RetirementPlanNameDomain_2690" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_RetirementPlanNameAxis_2689" xlink:to="Locator_us-gaap_RetirementPlanNameDomain_2690" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2691" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:label="Locator_us-gaap_RestructuringPlanAxis_2692" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2691" xlink:to="Locator_us-gaap_RestructuringPlanAxis_2692" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:label="Locator_us-gaap_RestructuringPlanAxis_2693" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="Locator_us-gaap_RestructuringPlanDomain_2694" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RestructuringPlanAxis_2693" xlink:to="Locator_us-gaap_RestructuringPlanDomain_2694" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:label="Locator_us-gaap_RestructuringPlanAxis_2695" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="Locator_us-gaap_RestructuringPlanDomain_2696" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_RestructuringPlanAxis_2695" xlink:to="Locator_us-gaap_RestructuringPlanDomain_2696" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="Locator_us-gaap_RestructuringPlanDomain_2697" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DiscontinuedContributionMember" xlink:label="Locator_cop_DiscontinuedContributionMember_2698" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestructuringPlanDomain_2697" xlink:to="Locator_cop_DiscontinuedContributionMember_2698" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="Locator_us-gaap_RestructuringPlanDomain_2699" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CostSharingAssumptionsMember" xlink:label="Locator_cop_CostSharingAssumptionsMember_2700" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestructuringPlanDomain_2699" xlink:to="Locator_cop_CostSharingAssumptionsMember_2700" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="Locator_us-gaap_RestructuringPlanDomain_2701" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CopPSXExclusionMember" xlink:label="Locator_cop_CopPSXExclusionMember_2702" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestructuringPlanDomain_2701" xlink:to="Locator_cop_CopPSXExclusionMember_2702" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="Locator_us-gaap_RestructuringPlanDomain_2703" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PostSixtyFiveNotEligibleMember" xlink:label="Locator_cop_PostSixtyFiveNotEligibleMember_2704" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestructuringPlanDomain_2703" xlink:to="Locator_cop_PostSixtyFiveNotEligibleMember_2704" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="Locator_us-gaap_RestructuringPlanDomain_2705" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CopPreSixtyFiveRetireeMember" xlink:label="Locator_cop_CopPreSixtyFiveRetireeMember_2706" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestructuringPlanDomain_2705" xlink:to="Locator_cop_CopPreSixtyFiveRetireeMember_2706" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="Locator_us-gaap_RestructuringPlanDomain_2707" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PostSixtyFiveRetireeMember" xlink:label="Locator_cop_PostSixtyFiveRetireeMember_2708" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestructuringPlanDomain_2707" xlink:to="Locator_cop_PostSixtyFiveRetireeMember_2708" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2709" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanFundingStatusAxis" xlink:label="Locator_us-gaap_RetirementPlanFundingStatusAxis_2710" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2709" xlink:to="Locator_us-gaap_RetirementPlanFundingStatusAxis_2710" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanFundingStatusAxis" xlink:label="Locator_us-gaap_RetirementPlanFundingStatusAxis_2711" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanFundingStatusDomain" xlink:label="Locator_us-gaap_RetirementPlanFundingStatusDomain_2712" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanFundingStatusAxis_2711" xlink:to="Locator_us-gaap_RetirementPlanFundingStatusDomain_2712" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanFundingStatusAxis" xlink:label="Locator_us-gaap_RetirementPlanFundingStatusAxis_2713" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanFundingStatusDomain" xlink:label="Locator_us-gaap_RetirementPlanFundingStatusDomain_2714" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_RetirementPlanFundingStatusAxis_2713" xlink:to="Locator_us-gaap_RetirementPlanFundingStatusDomain_2714" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2715" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="Locator_us-gaap_FinancialInstrumentAxis_2716" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2715" xlink:to="Locator_us-gaap_FinancialInstrumentAxis_2716" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="Locator_us-gaap_FinancialInstrumentAxis_2717" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2718" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FinancialInstrumentAxis_2717" xlink:to="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2718" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="Locator_us-gaap_FinancialInstrumentAxis_2719" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2720" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_FinancialInstrumentAxis_2719" xlink:to="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2720" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2721" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_2722" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2721" xlink:to="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_2722" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_2723" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2724" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_2723" xlink:to="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2724" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2725" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="Locator_us-gaap_PlanNameAxis_2726" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2725" xlink:to="Locator_us-gaap_PlanNameAxis_2726" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="Locator_us-gaap_PlanNameAxis_2727" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="Locator_us-gaap_PlanNameDomain_2728" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_PlanNameAxis_2727" xlink:to="Locator_us-gaap_PlanNameDomain_2728" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="Locator_us-gaap_PlanNameAxis_2729" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="Locator_us-gaap_PlanNameDomain_2730" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_PlanNameAxis_2729" xlink:to="Locator_us-gaap_PlanNameDomain_2730" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="Locator_us-gaap_PlanNameDomain_2731" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DefinedContributionPlanCompanyRetirementContributionMember" xlink:label="Locator_cop_DefinedContributionPlanCompanyRetirementContributionMember_2732" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanNameDomain_2731" xlink:to="Locator_cop_DefinedContributionPlanCompanyRetirementContributionMember_2732" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="Locator_us-gaap_PlanNameDomain_2733" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_TwentyFourteenOmnibusStockAndPerformanceIncentivePlanOfConocoPhillipsMember" xlink:label="Locator_cop_TwentyFourteenOmnibusStockAndPerformanceIncentivePlanOfConocoPhillipsMember_2734" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanNameDomain_2733" xlink:to="Locator_cop_TwentyFourteenOmnibusStockAndPerformanceIncentivePlanOfConocoPhillipsMember_2734" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2735" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_2736" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2735" xlink:to="Locator_us-gaap_RetirementPlanTypeAxis_2736" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_2737" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_2738" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanTypeAxis_2737" xlink:to="Locator_us-gaap_RetirementPlanTypeDomain_2738" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2739" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_2740" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2739" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationAxis_2740" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_2741" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2742" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationAxis_2741" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2742" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureEmployeeBenefitPlansFairValuesOfPensionPlanAssetsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2835" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="Locator_us-gaap_FairValueInputsLevel1Member_2836" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2835" xlink:to="Locator_us-gaap_FairValueInputsLevel1Member_2836" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2837" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="Locator_us-gaap_FairValueInputsLevel2Member_2838" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2837" xlink:to="Locator_us-gaap_FairValueInputsLevel2Member_2838" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2839" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="Locator_us-gaap_FairValueInputsLevel3Member_2840" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2839" xlink:to="Locator_us-gaap_FairValueInputsLevel3Member_2840" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2841" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_2842" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2841" xlink:to="Locator_us-gaap_DomesticPlanMember_2842" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_2843" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_US" xlink:label="Locator_country_US_2844" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DomesticPlanMember_2843" xlink:to="Locator_country_US_2844" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2845" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="Locator_us-gaap_ForeignPlanMember_2846" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2845" xlink:to="Locator_us-gaap_ForeignPlanMember_2846" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2847" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FairValuesOfOurPensionPlanAssetsExcludingInsuranceAnnuityContractsAndNetPayables" xlink:label="Locator_cop_FairValuesOfOurPensionPlanAssetsExcludingInsuranceAnnuityContractsAndNetPayables_2848" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2847" xlink:to="Locator_cop_FairValuesOfOurPensionPlanAssetsExcludingInsuranceAnnuityContractsAndNetPayables_2848" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2849" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2850" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_2849" xlink:to="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2850" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2851" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="Locator_us-gaap_FairValueByMeasurementBasisAxis_2852" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2851" xlink:to="Locator_us-gaap_FairValueByMeasurementBasisAxis_2852" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="Locator_us-gaap_FairValueByMeasurementBasisAxis_2853" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="Locator_us-gaap_PortionAtFairValueFairValueDisclosureMember_2854" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_FairValueByMeasurementBasisAxis_2853" xlink:to="Locator_us-gaap_PortionAtFairValueFairValueDisclosureMember_2854" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="Locator_us-gaap_FairValueByMeasurementBasisAxis_2855" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_2856" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FairValueByMeasurementBasisAxis_2855" xlink:to="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_2856" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_2857" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember" xlink:label="Locator_us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember_2858" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_2857" xlink:to="Locator_us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember_2858" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_2859" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="Locator_us-gaap_PortionAtFairValueFairValueDisclosureMember_2860" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_2859" xlink:to="Locator_us-gaap_PortionAtFairValueFairValueDisclosureMember_2860" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2861" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="Locator_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_2862" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2861" xlink:to="Locator_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_2862" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="Locator_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_2863" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_2864" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_2863" xlink:to="Locator_us-gaap_PlanAssetCategoriesDomain_2864" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="Locator_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_2865" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_2866" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_2865" xlink:to="Locator_us-gaap_PlanAssetCategoriesDomain_2866" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_2867" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesUsMember" xlink:label="Locator_us-gaap_DefinedBenefitPlanEquitySecuritiesUsMember_2868" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanAssetCategoriesDomain_2867" xlink:to="Locator_us-gaap_DefinedBenefitPlanEquitySecuritiesUsMember_2868" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_2869" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember" xlink:label="Locator_us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember_2870" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanAssetCategoriesDomain_2869" xlink:to="Locator_us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember_2870" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_2871" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_USGovernmentDebtSecuritiesMember" xlink:label="Locator_us-gaap_USGovernmentDebtSecuritiesMember_2872" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanAssetCategoriesDomain_2871" xlink:to="Locator_us-gaap_USGovernmentDebtSecuritiesMember_2872" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_2873" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignGovernmentDebtSecuritiesMember" xlink:label="Locator_us-gaap_ForeignGovernmentDebtSecuritiesMember_2874" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanAssetCategoriesDomain_2873" xlink:to="Locator_us-gaap_ForeignGovernmentDebtSecuritiesMember_2874" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_2875" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticCorporateDebtSecuritiesMember" xlink:label="Locator_us-gaap_DomesticCorporateDebtSecuritiesMember_2876" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanAssetCategoriesDomain_2875" xlink:to="Locator_us-gaap_DomesticCorporateDebtSecuritiesMember_2876" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_2877" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignCorporateDebtSecuritiesMember" xlink:label="Locator_us-gaap_ForeignCorporateDebtSecuritiesMember_2878" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanAssetCategoriesDomain_2877" xlink:to="Locator_us-gaap_ForeignCorporateDebtSecuritiesMember_2878" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_2879" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember" xlink:label="Locator_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_2880" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanAssetCategoriesDomain_2879" xlink:to="Locator_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_2880" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_2881" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BankTimeDepositsMember" xlink:label="Locator_us-gaap_BankTimeDepositsMember_2882" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanAssetCategoriesDomain_2881" xlink:to="Locator_us-gaap_BankTimeDepositsMember_2882" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_2883" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDerivativeMember" xlink:label="Locator_us-gaap_DefinedBenefitPlanDerivativeMember_2884" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanAssetCategoriesDomain_2883" xlink:to="Locator_us-gaap_DefinedBenefitPlanDerivativeMember_2884" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_2885" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesMember" xlink:label="Locator_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_2886" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanAssetCategoriesDomain_2885" xlink:to="Locator_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_2886" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesMember" xlink:label="Locator_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_2887" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityFundsMember" xlink:label="Locator_us-gaap_EquityFundsMember_2888" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_2887" xlink:to="Locator_us-gaap_EquityFundsMember_2888" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesMember" xlink:label="Locator_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_2889" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DefinedBenefitPlanCommonCollectiveTrustEquitySecuritiesMember" xlink:label="Locator_cop_DefinedBenefitPlanCommonCollectiveTrustEquitySecuritiesMember_2890" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_2889" xlink:to="Locator_cop_DefinedBenefitPlanCommonCollectiveTrustEquitySecuritiesMember_2890" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_2891" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDebtSecurityMember" xlink:label="Locator_us-gaap_DefinedBenefitPlanDebtSecurityMember_2892" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanAssetCategoriesDomain_2891" xlink:to="Locator_us-gaap_DefinedBenefitPlanDebtSecurityMember_2892" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDebtSecurityMember" xlink:label="Locator_us-gaap_DefinedBenefitPlanDebtSecurityMember_2893" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MutualFundMember" xlink:label="Locator_us-gaap_MutualFundMember_2894" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDebtSecurityMember_2893" xlink:to="Locator_us-gaap_MutualFundMember_2894" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDebtSecurityMember" xlink:label="Locator_us-gaap_DefinedBenefitPlanDebtSecurityMember_2895" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanCommonCollectiveTrustMember" xlink:label="Locator_us-gaap_DefinedBenefitPlanCommonCollectiveTrustMember_2896" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDebtSecurityMember_2895" xlink:to="Locator_us-gaap_DefinedBenefitPlanCommonCollectiveTrustMember_2896" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_2897" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanRealEstateMember" xlink:label="Locator_us-gaap_DefinedBenefitPlanRealEstateMember_2898" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanAssetCategoriesDomain_2897" xlink:to="Locator_us-gaap_DefinedBenefitPlanRealEstateMember_2898" order="12.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2899" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_2900" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2899" xlink:to="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_2900" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_2901" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2902" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_2901" xlink:to="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2902" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2903" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_2904" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2903" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationAxis_2904" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_2905" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2906" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationAxis_2905" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2906" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_2907" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2908" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationAxis_2907" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationDomain_2908" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureEmployeeBenefitPlansComponentsOfNetPeriodicBenefitCostDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3005" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_3006" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3005" xlink:to="Locator_us-gaap_DomesticPlanMember_3006" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_3007" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_US" xlink:label="Locator_country_US_3008" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DomesticPlanMember_3007" xlink:to="Locator_country_US_3008" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3009" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="Locator_us-gaap_ForeignPlanMember_3010" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3009" xlink:to="Locator_us-gaap_ForeignPlanMember_3010" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_3011" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_3012" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_3011" xlink:to="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_3012" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_3013" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_PensionPlansDefinedBenefitMember_3014" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_3013" xlink:to="Locator_us-gaap_PensionPlansDefinedBenefitMember_3014" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_3015" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_3016" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_3015" xlink:to="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_3016" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_3017" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="Locator_us-gaap_DefinedBenefitPlanServiceCost_3018" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_3017" xlink:to="Locator_us-gaap_DefinedBenefitPlanServiceCost_3018" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_3019" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="Locator_us-gaap_DefinedBenefitPlanInterestCost_3020" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_3019" xlink:to="Locator_us-gaap_DefinedBenefitPlanInterestCost_3020" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_3021" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:label="Locator_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_3022" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_3021" xlink:to="Locator_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_3022" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_3023" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" xlink:label="Locator_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_3024" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_3023" xlink:to="Locator_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_3024" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_3025" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses" xlink:label="Locator_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_3026" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_3025" xlink:to="Locator_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_3026" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_3027" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1" xlink:label="Locator_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_3028" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_3027" xlink:to="Locator_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_3028" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_3029" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:label="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_3030" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_3029" xlink:to="Locator_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_3030" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_3031" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3032" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_3031" xlink:to="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3032" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3033" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_3034" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3033" xlink:to="Locator_us-gaap_RetirementPlanTypeAxis_3034" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_3035" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_3036" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanTypeAxis_3035" xlink:to="Locator_us-gaap_RetirementPlanTypeDomain_3036" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3037" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_3038" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3037" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationAxis_3038" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_3039" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3040" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationAxis_3039" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3040" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureEmployeeBenefitPlansSourcesOfChangeInOtherComprehensiveIncomeDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3083" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_3084" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3083" xlink:to="Locator_us-gaap_DomesticPlanMember_3084" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_3085" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_US" xlink:label="Locator_country_US_3086" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DomesticPlanMember_3085" xlink:to="Locator_country_US_3086" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3087" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="Locator_us-gaap_ForeignPlanMember_3088" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3087" xlink:to="Locator_us-gaap_ForeignPlanMember_3088" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_3089" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_3090" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_3089" xlink:to="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_3090" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_3091" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_PensionPlansDefinedBenefitMember_3092" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_3091" xlink:to="Locator_us-gaap_PensionPlansDefinedBenefitMember_3092" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_3093" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_3094" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_3093" xlink:to="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_3094" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_3095" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax_3096" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_3095" xlink:to="Locator_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax_3096" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_3097" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax_3098" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_3097" xlink:to="Locator_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax_3098" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_3099" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax" xlink:label="Locator_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax_3100" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_3099" xlink:to="Locator_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax_3100" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_3101" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax_3102" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_3101" xlink:to="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax_3102" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_3103" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax_3104" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_3103" xlink:to="Locator_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax_3104" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_3105" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax" xlink:label="Locator_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_3106" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract_3105" xlink:to="Locator_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_3106" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_3107" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_3108" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_3107" xlink:to="Locator_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_3108" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_3109" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear" xlink:label="Locator_us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear_3110" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_3109" xlink:to="Locator_us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear_3110" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_3111" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear" xlink:label="Locator_us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear_3112" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_3111" xlink:to="Locator_us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear_3112" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_3113" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3114" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_3113" xlink:to="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3114" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3115" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_3116" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3115" xlink:to="Locator_us-gaap_RetirementPlanTypeAxis_3116" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_3117" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_3118" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanTypeAxis_3117" xlink:to="Locator_us-gaap_RetirementPlanTypeDomain_3118" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3119" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_3120" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3119" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationAxis_3120" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_3121" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3122" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationAxis_3121" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3122" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/EmployeeBenefitPlansChangeInBenefitObligationsAndFairValueOfPlanAssetsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3197" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_3198" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3197" xlink:to="Locator_us-gaap_DomesticPlanMember_3198" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_3199" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_US" xlink:label="Locator_country_US_3200" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DomesticPlanMember_3199" xlink:to="Locator_country_US_3200" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3201" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="Locator_us-gaap_ForeignPlanMember_3202" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3201" xlink:to="Locator_us-gaap_ForeignPlanMember_3202" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_3203" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_3204" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_3203" xlink:to="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_3204" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_3205" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_PensionPlansDefinedBenefitMember_3206" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_3205" xlink:to="Locator_us-gaap_PensionPlansDefinedBenefitMember_3206" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_3207" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GeneralDiscussionOfPensionAndOtherPostretirementBenefitsAbstract" xlink:label="Locator_us-gaap_GeneralDiscussionOfPensionAndOtherPostretirementBenefitsAbstract_3208" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_3207" xlink:to="Locator_us-gaap_GeneralDiscussionOfPensionAndOtherPostretirementBenefitsAbstract_3208" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GeneralDiscussionOfPensionAndOtherPostretirementBenefitsAbstract" xlink:label="Locator_us-gaap_GeneralDiscussionOfPensionAndOtherPostretirementBenefitsAbstract_3209" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3210" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GeneralDiscussionOfPensionAndOtherPostretirementBenefitsAbstract_3209" xlink:to="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3210" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3211" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligation" xlink:label="Locator_us-gaap_DefinedBenefitPlanBenefitObligation_3212" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3211" xlink:to="Locator_us-gaap_DefinedBenefitPlanBenefitObligation_3212" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3213" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="Locator_us-gaap_DefinedBenefitPlanServiceCost_3214" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3213" xlink:to="Locator_us-gaap_DefinedBenefitPlanServiceCost_3214" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3215" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="Locator_us-gaap_DefinedBenefitPlanInterestCost_3216" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3215" xlink:to="Locator_us-gaap_DefinedBenefitPlanInterestCost_3216" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3217" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant" xlink:label="Locator_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_3218" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3217" xlink:to="Locator_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_3218" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3219" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAmendments" xlink:label="Locator_us-gaap_DefinedBenefitPlanPlanAmendments_3220" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3219" xlink:to="Locator_us-gaap_DefinedBenefitPlanPlanAmendments_3220" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3221" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanActuarialGainLoss" xlink:label="Locator_us-gaap_DefinedBenefitPlanActuarialGainLoss_3222" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3221" xlink:to="Locator_us-gaap_DefinedBenefitPlanActuarialGainLoss_3222" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3223" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid" xlink:label="Locator_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_3224" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3223" xlink:to="Locator_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_3224" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3225" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanCurtailments" xlink:label="Locator_us-gaap_DefinedBenefitPlanCurtailments_3226" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3225" xlink:to="Locator_us-gaap_DefinedBenefitPlanCurtailments_3226" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3227" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanSettlementsBenefitObligation" xlink:label="Locator_us-gaap_DefinedBenefitPlanSettlementsBenefitObligation_3228" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3227" xlink:to="Locator_us-gaap_DefinedBenefitPlanSettlementsBenefitObligation_3228" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3229" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanSpecialTerminationBenefits" xlink:label="Locator_us-gaap_DefinedBenefitPlanSpecialTerminationBenefits_3230" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3229" xlink:to="Locator_us-gaap_DefinedBenefitPlanSpecialTerminationBenefits_3230" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3231" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation" xlink:label="Locator_us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation_3232" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_3231" xlink:to="Locator_us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation_3232" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GeneralDiscussionOfPensionAndOtherPostretirementBenefitsAbstract" xlink:label="Locator_us-gaap_GeneralDiscussionOfPensionAndOtherPostretirementBenefitsAbstract_3233" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3234" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GeneralDiscussionOfPensionAndOtherPostretirementBenefitsAbstract_3233" xlink:to="Locator_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3234" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3235" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:label="Locator_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_3236" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3235" xlink:to="Locator_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_3236" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3237" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets" xlink:label="Locator_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_3238" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3237" xlink:to="Locator_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_3238" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3239" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer" xlink:label="Locator_us-gaap_DefinedBenefitPlanContributionsByEmployer_3240" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3239" xlink:to="Locator_us-gaap_DefinedBenefitPlanContributionsByEmployer_3240" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3241" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant" xlink:label="Locator_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_3242" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3241" xlink:to="Locator_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_3242" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3243" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid" xlink:label="Locator_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_3244" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3243" xlink:to="Locator_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_3244" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3245" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanSettlementsPlanAssets" xlink:label="Locator_us-gaap_DefinedBenefitPlanSettlementsPlanAssets_3246" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3245" xlink:to="Locator_us-gaap_DefinedBenefitPlanSettlementsPlanAssets_3246" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:label="Locator_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3247" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss" xlink:label="Locator_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_3248" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3247" xlink:to="Locator_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_3248" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GeneralDiscussionOfPensionAndOtherPostretirementBenefitsAbstract" xlink:label="Locator_us-gaap_GeneralDiscussionOfPensionAndOtherPostretirementBenefitsAbstract_3249" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlan" xlink:label="Locator_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_3250" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GeneralDiscussionOfPensionAndOtherPostretirementBenefitsAbstract_3249" xlink:to="Locator_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_3250" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_3251" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3252" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_3251" xlink:to="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3252" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3253" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_3254" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3253" xlink:to="Locator_us-gaap_RetirementPlanTypeAxis_3254" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_3255" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_3256" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanTypeAxis_3255" xlink:to="Locator_us-gaap_RetirementPlanTypeDomain_3256" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3257" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_3258" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3257" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationAxis_3258" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_3259" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3260" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationAxis_3259" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationDomain_3260" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureImpairmentsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3287" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateMember" xlink:label="Locator_us-gaap_CorporateMember_3288" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3287" xlink:to="Locator_us-gaap_CorporateMember_3288" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3289" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AsiaPacificMember1Member" xlink:label="Locator_cop_AsiaPacificMember1Member_3290" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3289" xlink:to="Locator_cop_AsiaPacificMember1Member_3290" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3291" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AsiaPacificAndMiddleEastSegmentMember" xlink:label="Locator_cop_AsiaPacificAndMiddleEastSegmentMember_3292" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3291" xlink:to="Locator_cop_AsiaPacificAndMiddleEastSegmentMember_3292" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3293" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AlaskaSegmentMember" xlink:label="Locator_cop_AlaskaSegmentMember_3294" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3293" xlink:to="Locator_cop_AlaskaSegmentMember_3294" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3295" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LowerFortyEightSegmentMember" xlink:label="Locator_cop_LowerFortyEightSegmentMember_3296" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3295" xlink:to="Locator_cop_LowerFortyEightSegmentMember_3296" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3297" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CanadaSegmentMember" xlink:label="Locator_cop_CanadaSegmentMember_3298" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3297" xlink:to="Locator_cop_CanadaSegmentMember_3298" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3299" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EuropeAndNorthAfricaSegmentMember" xlink:label="Locator_cop_EuropeAndNorthAfricaSegmentMember_3300" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3299" xlink:to="Locator_cop_EuropeAndNorthAfricaSegmentMember_3300" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3301" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EuropeMiddleEastAndNorthAfricaMember" xlink:label="Locator_cop_EuropeMiddleEastAndNorthAfricaMember_3302" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3301" xlink:to="Locator_cop_EuropeMiddleEastAndNorthAfricaMember_3302" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_3303" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3304" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_StatementBusinessSegmentsAxis_3303" xlink:to="Locator_us-gaap_SegmentDomain_3304" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_3305" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_3306" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ConsolidationItemsAxis_3305" xlink:to="Locator_srt_ConsolidationItemsDomain_3306" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_3307" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="Locator_us-gaap_OperatingSegmentsMember_3308" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidationItemsDomain_3307" xlink:to="Locator_us-gaap_OperatingSegmentsMember_3308" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="Locator_srt_StatementGeographicalAxis_3309" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_3310" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_StatementGeographicalAxis_3309" xlink:to="Locator_srt_SegmentGeographicalDomain_3310" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems_3311" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_3312" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems_3311" xlink:to="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_3312" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_3313" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="Locator_srt_StatementGeographicalAxis_3314" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_3313" xlink:to="Locator_srt_StatementGeographicalAxis_3314" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_3315" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_3316" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_3315" xlink:to="Locator_us-gaap_StatementBusinessSegmentsAxis_3316" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_3317" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_3318" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_3317" xlink:to="Locator_srt_ConsolidationItemsAxis_3318" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems_3319" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetImpairmentCharges" xlink:label="Locator_us-gaap_AssetImpairmentCharges_3320" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems_3319" xlink:to="Locator_us-gaap_AssetImpairmentCharges_3320" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/SegmentDisclosuresNetIncomeLossInvestmentsTotalAssetsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="Locator_us-gaap_AssetsAbstract_3471" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Assets" xlink:label="Locator_us-gaap_Assets_3472" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_AssetsAbstract_3471" xlink:to="Locator_us-gaap_Assets_3472" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3473" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AsiaPacificAndMiddleEastSegmentMember" xlink:label="Locator_cop_AsiaPacificAndMiddleEastSegmentMember_3474" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3473" xlink:to="Locator_cop_AsiaPacificAndMiddleEastSegmentMember_3474" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3475" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherInternationalSegmentMember" xlink:label="Locator_cop_OtherInternationalSegmentMember_3476" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3475" xlink:to="Locator_cop_OtherInternationalSegmentMember_3476" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3477" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AlaskaSegmentMember" xlink:label="Locator_cop_AlaskaSegmentMember_3478" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3477" xlink:to="Locator_cop_AlaskaSegmentMember_3478" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3479" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LowerFortyEightSegmentMember" xlink:label="Locator_cop_LowerFortyEightSegmentMember_3480" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3479" xlink:to="Locator_cop_LowerFortyEightSegmentMember_3480" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3481" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CanadaSegmentMember" xlink:label="Locator_cop_CanadaSegmentMember_3482" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3481" xlink:to="Locator_cop_CanadaSegmentMember_3482" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3483" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EuropeAndNorthAfricaSegmentMember" xlink:label="Locator_cop_EuropeAndNorthAfricaSegmentMember_3484" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3483" xlink:to="Locator_cop_EuropeAndNorthAfricaSegmentMember_3484" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_3485" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3486" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_StatementBusinessSegmentsAxis_3485" xlink:to="Locator_us-gaap_SegmentDomain_3486" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_3487" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_3488" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ConsolidationItemsAxis_3487" xlink:to="Locator_srt_ConsolidationItemsDomain_3488" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_3489" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="Locator_us-gaap_CorporateNonSegmentMember_3490" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidationItemsDomain_3489" xlink:to="Locator_us-gaap_CorporateNonSegmentMember_3490" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_3491" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="Locator_us-gaap_OperatingSegmentsMember_3492" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidationItemsDomain_3491" xlink:to="Locator_us-gaap_OperatingSegmentsMember_3492" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_3493" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLossAbstract" xlink:label="Locator_us-gaap_NetIncomeLossAbstract_3494" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_3493" xlink:to="Locator_us-gaap_NetIncomeLossAbstract_3494" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLossAbstract" xlink:label="Locator_us-gaap_NetIncomeLossAbstract_3495" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="Locator_us-gaap_NetIncomeLoss_3496" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_NetIncomeLossAbstract_3495" xlink:to="Locator_us-gaap_NetIncomeLoss_3496" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_3497" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueRollForward" xlink:label="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueRollForward_3498" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_3497" xlink:to="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueRollForward_3498" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueRollForward" xlink:label="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueRollForward_3499" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValue" xlink:label="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValue_3500" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValueRollForward_3499" xlink:to="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesAtFairValue_3500" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_3501" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="Locator_us-gaap_AssetsAbstract_3502" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_3501" xlink:to="Locator_us-gaap_AssetsAbstract_3502" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_3503" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3504" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_3503" xlink:to="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3504" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3505" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_3506" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3505" xlink:to="Locator_us-gaap_StatementBusinessSegmentsAxis_3506" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3507" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_3508" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3507" xlink:to="Locator_srt_ConsolidationItemsAxis_3508" order="2.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureInvestmentsLoansAndLTReceivablesComponentsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeAxis" xlink:label="Locator_us-gaap_InvestmentTypeAxis_3559" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="Locator_us-gaap_InvestmentTypeCategorizationMember_3560" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_InvestmentTypeAxis_3559" xlink:to="Locator_us-gaap_InvestmentTypeCategorizationMember_3560" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeAxis" xlink:label="Locator_us-gaap_InvestmentTypeAxis_3561" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="Locator_us-gaap_InvestmentTypeCategorizationMember_3562" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_InvestmentTypeAxis_3561" xlink:to="Locator_us-gaap_InvestmentTypeCategorizationMember_3562" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="Locator_us-gaap_InvestmentTypeCategorizationMember_3563" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherLongTermInvestmentsMember" xlink:label="Locator_us-gaap_OtherLongTermInvestmentsMember_3564" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_InvestmentTypeCategorizationMember_3563" xlink:to="Locator_us-gaap_OtherLongTermInvestmentsMember_3564" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable" xlink:label="Locator_us-gaap_DebtSecuritiesAvailableForSaleTable_3565" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeAxis" xlink:label="Locator_us-gaap_InvestmentTypeAxis_3566" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DebtSecuritiesAvailableForSaleTable_3565" xlink:to="Locator_us-gaap_InvestmentTypeAxis_3566" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SummaryOfInvestmentHoldingsLineItems" xlink:label="Locator_us-gaap_SummaryOfInvestmentHoldingsLineItems_3567" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable" xlink:label="Locator_us-gaap_DebtSecuritiesAvailableForSaleTable_3568" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_SummaryOfInvestmentHoldingsLineItems_3567" xlink:to="Locator_us-gaap_DebtSecuritiesAvailableForSaleTable_3568" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SummaryOfInvestmentHoldingsLineItems" xlink:label="Locator_us-gaap_SummaryOfInvestmentHoldingsLineItems_3569" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="Locator_us-gaap_EquityMethodInvestments_3570" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SummaryOfInvestmentHoldingsLineItems_3569" xlink:to="Locator_us-gaap_EquityMethodInvestments_3570" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SummaryOfInvestmentHoldingsLineItems" xlink:label="Locator_us-gaap_SummaryOfInvestmentHoldingsLineItems_3571" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DueFromRelatedPartiesNoncurrent" xlink:label="Locator_us-gaap_DueFromRelatedPartiesNoncurrent_3572" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SummaryOfInvestmentHoldingsLineItems_3571" xlink:to="Locator_us-gaap_DueFromRelatedPartiesNoncurrent_3572" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SummaryOfInvestmentHoldingsLineItems" xlink:label="Locator_us-gaap_SummaryOfInvestmentHoldingsLineItems_3573" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsReceivableNetNoncurrent" xlink:label="Locator_us-gaap_AccountsReceivableNetNoncurrent_3574" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SummaryOfInvestmentHoldingsLineItems_3573" xlink:to="Locator_us-gaap_AccountsReceivableNetNoncurrent_3574" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SummaryOfInvestmentHoldingsLineItems" xlink:label="Locator_us-gaap_SummaryOfInvestmentHoldingsLineItems_3575" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecuritiesNoncurrent" xlink:label="Locator_us-gaap_AvailableForSaleSecuritiesDebtSecuritiesNoncurrent_3576" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SummaryOfInvestmentHoldingsLineItems_3575" xlink:to="Locator_us-gaap_AvailableForSaleSecuritiesDebtSecuritiesNoncurrent_3576" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SummaryOfInvestmentHoldingsLineItems" xlink:label="Locator_us-gaap_SummaryOfInvestmentHoldingsLineItems_3577" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherInvestments" xlink:label="Locator_us-gaap_OtherInvestments_3578" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SummaryOfInvestmentHoldingsLineItems_3577" xlink:to="Locator_us-gaap_OtherInvestments_3578" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SummaryOfInvestmentHoldingsLineItems" xlink:label="Locator_us-gaap_SummaryOfInvestmentHoldingsLineItems_3579" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermInvestmentsAndReceivablesNet" xlink:label="Locator_us-gaap_LongTermInvestmentsAndReceivablesNet_3580" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SummaryOfInvestmentHoldingsLineItems_3579" xlink:to="Locator_us-gaap_LongTermInvestmentsAndReceivablesNet_3580" order="6.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureSegmentDisclosuresAnalysisOfResultsByOperatingSegmentDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3595" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AsiaPacificAndMiddleEastMember" xlink:label="Locator_cop_AsiaPacificAndMiddleEastMember_3596" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3595" xlink:to="Locator_cop_AsiaPacificAndMiddleEastMember_3596" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3597" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AsiaPacificMember1Member" xlink:label="Locator_cop_AsiaPacificMember1Member_3598" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3597" xlink:to="Locator_cop_AsiaPacificMember1Member_3598" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3599" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherInternationalSegmentMember" xlink:label="Locator_cop_OtherInternationalSegmentMember_3600" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3599" xlink:to="Locator_cop_OtherInternationalSegmentMember_3600" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3601" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AlaskaSegmentMember" xlink:label="Locator_cop_AlaskaSegmentMember_3602" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3601" xlink:to="Locator_cop_AlaskaSegmentMember_3602" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3603" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LowerFortyEightSegmentMember" xlink:label="Locator_cop_LowerFortyEightSegmentMember_3604" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3603" xlink:to="Locator_cop_LowerFortyEightSegmentMember_3604" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3605" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CanadaSegmentMember" xlink:label="Locator_cop_CanadaSegmentMember_3606" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3605" xlink:to="Locator_cop_CanadaSegmentMember_3606" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3607" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EuropeAndNorthAfricaSegmentMember" xlink:label="Locator_cop_EuropeAndNorthAfricaSegmentMember_3608" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3607" xlink:to="Locator_cop_EuropeAndNorthAfricaSegmentMember_3608" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3609" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EuropeMiddleEastAndNorthAfricaMember" xlink:label="Locator_cop_EuropeMiddleEastAndNorthAfricaMember_3610" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_3609" xlink:to="Locator_cop_EuropeMiddleEastAndNorthAfricaMember_3610" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_3611" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3612" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_StatementBusinessSegmentsAxis_3611" xlink:to="Locator_us-gaap_SegmentDomain_3612" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_3613" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_3614" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_StatementBusinessSegmentsAxis_3613" xlink:to="Locator_us-gaap_SegmentDomain_3614" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_3615" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_3616" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ConsolidationItemsAxis_3615" xlink:to="Locator_srt_ConsolidationItemsDomain_3616" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_3617" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IntersegmentEliminationMember" xlink:label="Locator_us-gaap_IntersegmentEliminationMember_3618" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidationItemsDomain_3617" xlink:to="Locator_us-gaap_IntersegmentEliminationMember_3618" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_3619" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="Locator_us-gaap_CorporateNonSegmentMember_3620" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidationItemsDomain_3619" xlink:to="Locator_us-gaap_CorporateNonSegmentMember_3620" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_3621" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="Locator_us-gaap_OperatingSegmentsMember_3622" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidationItemsDomain_3621" xlink:to="Locator_us-gaap_OperatingSegmentsMember_3622" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_3623" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="Locator_us-gaap_ConcentrationRiskPercentage1_3624" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_3623" xlink:to="Locator_us-gaap_ConcentrationRiskPercentage1_3624" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_3625" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3626" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_3625" xlink:to="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3626" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3627" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_3628" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3627" xlink:to="Locator_us-gaap_StatementBusinessSegmentsAxis_3628" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3629" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_3630" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3629" xlink:to="Locator_srt_ConsolidationItemsAxis_3630" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3631" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:label="Locator_us-gaap_ConcentrationRiskByTypeAxis_3632" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3631" xlink:to="Locator_us-gaap_ConcentrationRiskByTypeAxis_3632" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:label="Locator_us-gaap_ConcentrationRiskByTypeAxis_3633" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="Locator_us-gaap_ConcentrationRiskTypeDomain_3634" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_ConcentrationRiskByTypeAxis_3633" xlink:to="Locator_us-gaap_ConcentrationRiskTypeDomain_3634" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:label="Locator_us-gaap_ConcentrationRiskByTypeAxis_3635" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="Locator_us-gaap_ConcentrationRiskTypeDomain_3636" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_ConcentrationRiskByTypeAxis_3635" xlink:to="Locator_us-gaap_ConcentrationRiskTypeDomain_3636" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="Locator_us-gaap_ConcentrationRiskTypeDomain_3637" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CustomerConcentrationRiskMember" xlink:label="Locator_us-gaap_CustomerConcentrationRiskMember_3638" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ConcentrationRiskTypeDomain_3637" xlink:to="Locator_us-gaap_CustomerConcentrationRiskMember_3638" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3639" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:label="Locator_us-gaap_ConcentrationRiskByBenchmarkAxis_3640" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_3639" xlink:to="Locator_us-gaap_ConcentrationRiskByBenchmarkAxis_3640" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:label="Locator_us-gaap_ConcentrationRiskByBenchmarkAxis_3641" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="Locator_us-gaap_ConcentrationRiskBenchmarkDomain_3642" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_ConcentrationRiskByBenchmarkAxis_3641" xlink:to="Locator_us-gaap_ConcentrationRiskBenchmarkDomain_3642" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:label="Locator_us-gaap_ConcentrationRiskByBenchmarkAxis_3643" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="Locator_us-gaap_ConcentrationRiskBenchmarkDomain_3644" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_ConcentrationRiskByBenchmarkAxis_3643" xlink:to="Locator_us-gaap_ConcentrationRiskBenchmarkDomain_3644" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="Locator_us-gaap_ConcentrationRiskBenchmarkDomain_3645" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SalesRevenueNetMember" xlink:label="Locator_us-gaap_SalesRevenueNetMember_3646" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ConcentrationRiskBenchmarkDomain_3645" xlink:to="Locator_us-gaap_SalesRevenueNetMember_3646" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_3647" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="Locator_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_3648" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_3647" xlink:to="Locator_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_3648" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/FairValueMeasurementFairValueOfFinancialInstrumentsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="Locator_us-gaap_FairValueByMeasurementBasisAxis_3711" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_3712" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FairValueByMeasurementBasisAxis_3711" xlink:to="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_3712" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_3713" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:label="Locator_us-gaap_CarryingReportedAmountFairValueDisclosureMember_3714" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_3713" xlink:to="Locator_us-gaap_CarryingReportedAmountFairValueDisclosureMember_3714" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_3715" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:label="Locator_us-gaap_EstimateOfFairValueFairValueDisclosureMember_3716" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_3715" xlink:to="Locator_us-gaap_EstimateOfFairValueFairValueDisclosureMember_3716" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_3717" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="Locator_us-gaap_PortionAtFairValueFairValueDisclosureMember_3718" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_3717" xlink:to="Locator_us-gaap_PortionAtFairValueFairValueDisclosureMember_3718" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="Locator_us-gaap_DerivativeInstrumentRiskAxis_3719" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_3720" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_DerivativeInstrumentRiskAxis_3719" xlink:to="Locator_us-gaap_DerivativeContractTypeDomain_3720" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_3721" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommodityContractMember" xlink:label="Locator_us-gaap_CommodityContractMember_3722" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeContractTypeDomain_3721" xlink:to="Locator_us-gaap_CommodityContractMember_3722" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:label="Locator_us-gaap_DerivativesFairValueLineItems_3723" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract" xlink:label="Locator_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_3724" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativesFairValueLineItems_3723" xlink:to="Locator_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_3724" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract" xlink:label="Locator_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_3725" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesEquitySecuritiesCurrent" xlink:label="Locator_us-gaap_AvailableForSaleSecuritiesEquitySecuritiesCurrent_3726" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_3725" xlink:to="Locator_us-gaap_AvailableForSaleSecuritiesEquitySecuritiesCurrent_3726" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract" xlink:label="Locator_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_3727" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral" xlink:label="Locator_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_3728" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_3727" xlink:to="Locator_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_3728" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract" xlink:label="Locator_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_3729" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:label="Locator_us-gaap_AvailableForSaleSecuritiesDebtSecurities_3730" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_3729" xlink:to="Locator_us-gaap_AvailableForSaleSecuritiesDebtSecurities_3730" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract" xlink:label="Locator_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_3731" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DueFromRelatedParties" xlink:label="Locator_us-gaap_DueFromRelatedParties_3732" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_3731" xlink:to="Locator_us-gaap_DueFromRelatedParties_3732" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:label="Locator_us-gaap_DerivativesFairValueLineItems_3733" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract" xlink:label="Locator_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_3734" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativesFairValueLineItems_3733" xlink:to="Locator_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_3734" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract" xlink:label="Locator_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_3735" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebt" xlink:label="Locator_us-gaap_LongTermDebt_3736" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_3735" xlink:to="Locator_us-gaap_LongTermDebt_3736" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract" xlink:label="Locator_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_3737" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral" xlink:label="Locator_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral_3738" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_3737" xlink:to="Locator_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral_3738" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:label="Locator_us-gaap_DerivativesFairValueLineItems_3739" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:label="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_3740" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DerivativesFairValueLineItems_3739" xlink:to="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_3740" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:label="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_3741" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="Locator_us-gaap_FairValueByMeasurementBasisAxis_3742" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_3741" xlink:to="Locator_us-gaap_FairValueByMeasurementBasisAxis_3742" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:label="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_3743" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeAxis" xlink:label="Locator_us-gaap_InvestmentTypeAxis_3744" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_3743" xlink:to="Locator_us-gaap_InvestmentTypeAxis_3744" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeAxis" xlink:label="Locator_us-gaap_InvestmentTypeAxis_3745" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="Locator_us-gaap_InvestmentTypeCategorizationMember_3746" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_InvestmentTypeAxis_3745" xlink:to="Locator_us-gaap_InvestmentTypeCategorizationMember_3746" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="Locator_us-gaap_InvestmentTypeCategorizationMember_3747" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherLongTermInvestmentsMember" xlink:label="Locator_us-gaap_OtherLongTermInvestmentsMember_3748" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_InvestmentTypeCategorizationMember_3747" xlink:to="Locator_us-gaap_OtherLongTermInvestmentsMember_3748" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:label="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_3749" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="Locator_us-gaap_DerivativeInstrumentRiskAxis_3750" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_3749" xlink:to="Locator_us-gaap_DerivativeInstrumentRiskAxis_3750" order="2.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsFinancialInstrumentsCostDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="Locator_us-gaap_DerivativeInstrumentRiskAxis_3781" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_3782" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_DerivativeInstrumentRiskAxis_3781" xlink:to="Locator_us-gaap_DerivativeContractTypeDomain_3782" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_3783" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_RemainingMaturities1To90DaysMemberMember" xlink:label="Locator_cop_RemainingMaturities1To90DaysMemberMember_3784" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeContractTypeDomain_3783" xlink:to="Locator_cop_RemainingMaturities1To90DaysMemberMember_3784" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_3785" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_RemainingMaturities91To180DaysMember" xlink:label="Locator_cop_RemainingMaturities91To180DaysMember_3786" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeContractTypeDomain_3785" xlink:to="Locator_cop_RemainingMaturities91To180DaysMember_3786" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_3787" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_RemainingMaturitiesWithinOneYearMember" xlink:label="Locator_cop_RemainingMaturitiesWithinOneYearMember_3788" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeContractTypeDomain_3787" xlink:to="Locator_cop_RemainingMaturitiesWithinOneYearMember_3788" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_3789" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_RemainingMaturitiesGreaterThanOneYearThroughFiveYearsMember" xlink:label="Locator_cop_RemainingMaturitiesGreaterThanOneYearThroughFiveYearsMember_3790" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeContractTypeDomain_3789" xlink:to="Locator_cop_RemainingMaturitiesGreaterThanOneYearThroughFiveYearsMember_3790" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems_3791" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfHeldToMaturitySecuritiesTable" xlink:label="Locator_us-gaap_ScheduleOfHeldToMaturitySecuritiesTable_3792" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems_3791" xlink:to="Locator_us-gaap_ScheduleOfHeldToMaturitySecuritiesTable_3792" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfHeldToMaturitySecuritiesTable" xlink:label="Locator_us-gaap_ScheduleOfHeldToMaturitySecuritiesTable_3793" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAndCashEquivalentsAxis" xlink:label="Locator_us-gaap_CashAndCashEquivalentsAxis_3794" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfHeldToMaturitySecuritiesTable_3793" xlink:to="Locator_us-gaap_CashAndCashEquivalentsAxis_3794" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAndCashEquivalentsAxis" xlink:label="Locator_us-gaap_CashAndCashEquivalentsAxis_3795" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:label="Locator_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_3796" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_CashAndCashEquivalentsAxis_3795" xlink:to="Locator_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_3796" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAndCashEquivalentsAxis" xlink:label="Locator_us-gaap_CashAndCashEquivalentsAxis_3797" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:label="Locator_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_3798" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_CashAndCashEquivalentsAxis_3797" xlink:to="Locator_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_3798" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:label="Locator_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_3799" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashMember" xlink:label="Locator_us-gaap_CashMember_3800" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_3799" xlink:to="Locator_us-gaap_CashMember_3800" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:label="Locator_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_3801" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashEquivalentsMember" xlink:label="Locator_us-gaap_CashEquivalentsMember_3802" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_3801" xlink:to="Locator_us-gaap_CashEquivalentsMember_3802" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashEquivalentsMember" xlink:label="Locator_us-gaap_CashEquivalentsMember_3803" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DemandDepositsMember" xlink:label="Locator_us-gaap_DemandDepositsMember_3804" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_CashEquivalentsMember_3803" xlink:to="Locator_us-gaap_DemandDepositsMember_3804" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashEquivalentsMember" xlink:label="Locator_us-gaap_CashEquivalentsMember_3805" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BankTimeDepositsMember" xlink:label="Locator_us-gaap_BankTimeDepositsMember_3806" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_CashEquivalentsMember_3805" xlink:to="Locator_us-gaap_BankTimeDepositsMember_3806" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashEquivalentsMember" xlink:label="Locator_us-gaap_CashEquivalentsMember_3807" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialPaperMember" xlink:label="Locator_us-gaap_CommercialPaperMember_3808" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_CashEquivalentsMember_3807" xlink:to="Locator_us-gaap_CommercialPaperMember_3808" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashEquivalentsMember" xlink:label="Locator_us-gaap_CashEquivalentsMember_3809" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_USGovernmentDebtSecuritiesMember" xlink:label="Locator_us-gaap_USGovernmentDebtSecuritiesMember_3810" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_CashEquivalentsMember_3809" xlink:to="Locator_us-gaap_USGovernmentDebtSecuritiesMember_3810" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfHeldToMaturitySecuritiesTable" xlink:label="Locator_us-gaap_ScheduleOfHeldToMaturitySecuritiesTable_3811" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="Locator_us-gaap_DerivativeInstrumentRiskAxis_3812" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfHeldToMaturitySecuritiesTable_3811" xlink:to="Locator_us-gaap_DerivativeInstrumentRiskAxis_3812" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems_3813" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CashAndCashEquivalentsCarriedatCostPlusAccruedInterest" xlink:label="Locator_cop_CashAndCashEquivalentsCarriedatCostPlusAccruedInterest_3814" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems_3813" xlink:to="Locator_cop_CashAndCashEquivalentsCarriedatCostPlusAccruedInterest_3814" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems_3815" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ShortTermInvestmentsCarriedAtCostPlusAccruedInterest" xlink:label="Locator_cop_ShortTermInvestmentsCarriedAtCostPlusAccruedInterest_3816" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems_3815" xlink:to="Locator_cop_ShortTermInvestmentsCarriedAtCostPlusAccruedInterest_3816" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems_3817" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_InvestmentsAndLongTermReceivablesCarriedAtCostPlusAccruedInterest" xlink:label="Locator_cop_InvestmentsAndLongTermReceivablesCarriedAtCostPlusAccruedInterest_3818" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems_3817" xlink:to="Locator_cop_InvestmentsAndLongTermReceivablesCarriedAtCostPlusAccruedInterest_3818" order="3.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/FairValueMeasurementFVHierarchyDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3875" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="Locator_us-gaap_FairValueInputsLevel1Member_3876" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3875" xlink:to="Locator_us-gaap_FairValueInputsLevel1Member_3876" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3877" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="Locator_us-gaap_FairValueInputsLevel2Member_3878" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3877" xlink:to="Locator_us-gaap_FairValueInputsLevel2Member_3878" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3879" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="Locator_us-gaap_FairValueInputsLevel3Member_3880" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3879" xlink:to="Locator_us-gaap_FairValueInputsLevel3Member_3880" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_3881" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3882" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_3881" xlink:to="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3882" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeAxis" xlink:label="Locator_us-gaap_InvestmentTypeAxis_3883" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="Locator_us-gaap_InvestmentTypeCategorizationMember_3884" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_InvestmentTypeAxis_3883" xlink:to="Locator_us-gaap_InvestmentTypeCategorizationMember_3884" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="Locator_us-gaap_InvestmentTypeCategorizationMember_3885" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherLongTermInvestmentsMember" xlink:label="Locator_us-gaap_OtherLongTermInvestmentsMember_3886" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_InvestmentTypeCategorizationMember_3885" xlink:to="Locator_us-gaap_OtherLongTermInvestmentsMember_3886" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3887" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesCurrent" xlink:label="Locator_us-gaap_AvailableForSaleSecuritiesCurrent_3888" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3887" xlink:to="Locator_us-gaap_AvailableForSaleSecuritiesCurrent_3888" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3889" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:label="Locator_us-gaap_AvailableForSaleSecuritiesDebtSecurities_3890" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3889" xlink:to="Locator_us-gaap_AvailableForSaleSecuritiesDebtSecurities_3890" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3891" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue" xlink:label="Locator_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue_3892" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3891" xlink:to="Locator_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue_3892" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3893" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue" xlink:label="Locator_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_3894" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3893" xlink:to="Locator_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_3894" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3895" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosure" xlink:label="Locator_us-gaap_LiabilitiesFairValueDisclosure_3896" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3895" xlink:to="Locator_us-gaap_LiabilitiesFairValueDisclosure_3896" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3897" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsLevel2ToLevel1TransfersDescription" xlink:label="Locator_us-gaap_FairValueAssetsLevel2ToLevel1TransfersDescription_3898" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3897" xlink:to="Locator_us-gaap_FairValueAssetsLevel2ToLevel1TransfersDescription_3898" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3899" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsLevel2ToLevel1TransfersAmount" xlink:label="Locator_us-gaap_FairValueAssetsLevel2ToLevel1TransfersAmount_3900" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3899" xlink:to="Locator_us-gaap_FairValueAssetsLevel2ToLevel1TransfersAmount_3900" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3901" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_3902" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3901" xlink:to="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_3902" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_3903" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeAxis" xlink:label="Locator_us-gaap_InvestmentTypeAxis_3904" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_3903" xlink:to="Locator_us-gaap_InvestmentTypeAxis_3904" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_3905" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_3906" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_3905" xlink:to="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_3906" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_3907" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="Locator_us-gaap_FairValueByMeasurementFrequencyAxis_3908" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_3907" xlink:to="Locator_us-gaap_FairValueByMeasurementFrequencyAxis_3908" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="Locator_us-gaap_FairValueByMeasurementFrequencyAxis_3909" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementFrequencyDomain_3910" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FairValueByMeasurementFrequencyAxis_3909" xlink:to="Locator_us-gaap_FairValueMeasurementFrequencyDomain_3910" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="Locator_us-gaap_FairValueByMeasurementFrequencyAxis_3911" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementFrequencyDomain_3912" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_FairValueByMeasurementFrequencyAxis_3911" xlink:to="Locator_us-gaap_FairValueMeasurementFrequencyDomain_3912" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementFrequencyDomain_3913" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:label="Locator_us-gaap_FairValueMeasurementsRecurringMember_3914" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueMeasurementFrequencyDomain_3913" xlink:to="Locator_us-gaap_FairValueMeasurementsRecurringMember_3914" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3915" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="Locator_us-gaap_AssetsFairValueDisclosure_3916" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_3915" xlink:to="Locator_us-gaap_AssetsFairValueDisclosure_3916" order="4.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsCommodityBalanceSheetDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="Locator_us-gaap_DerivativeInstrumentRiskAxis_3947" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_3948" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_DerivativeInstrumentRiskAxis_3947" xlink:to="Locator_us-gaap_DerivativeContractTypeDomain_3948" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_3949" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommodityContractMember" xlink:label="Locator_us-gaap_CommodityContractMember_3950" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeContractTypeDomain_3949" xlink:to="Locator_us-gaap_CommodityContractMember_3950" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:label="Locator_us-gaap_DerivativesFairValueLineItems_3951" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue" xlink:label="Locator_us-gaap_PriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue_3952" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativesFairValueLineItems_3951" xlink:to="Locator_us-gaap_PriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue_3952" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:label="Locator_us-gaap_DerivativesFairValueLineItems_3953" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue" xlink:label="Locator_us-gaap_PriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_3954" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativesFairValueLineItems_3953" xlink:to="Locator_us-gaap_PriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_3954" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:label="Locator_us-gaap_DerivativesFairValueLineItems_3955" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:label="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_3956" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DerivativesFairValueLineItems_3955" xlink:to="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_3956" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:label="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_3957" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="Locator_us-gaap_DerivativeInstrumentRiskAxis_3958" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_3957" xlink:to="Locator_us-gaap_DerivativeInstrumentRiskAxis_3958" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:label="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_3959" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="Locator_us-gaap_BalanceSheetLocationAxis_3960" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_3959" xlink:to="Locator_us-gaap_BalanceSheetLocationAxis_3960" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="Locator_us-gaap_BalanceSheetLocationAxis_3961" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_3962" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_BalanceSheetLocationAxis_3961" xlink:to="Locator_us-gaap_BalanceSheetLocationDomain_3962" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="Locator_us-gaap_BalanceSheetLocationAxis_3963" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_3964" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_BalanceSheetLocationAxis_3963" xlink:to="Locator_us-gaap_BalanceSheetLocationDomain_3964" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_3965" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherAccrualsMember" xlink:label="Locator_cop_OtherAccrualsMember_3966" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_3965" xlink:to="Locator_cop_OtherAccrualsMember_3966" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_3967" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherLiabilitiesMember" xlink:label="Locator_us-gaap_OtherLiabilitiesMember_3968" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_3967" xlink:to="Locator_us-gaap_OtherLiabilitiesMember_3968" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_3969" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="Locator_us-gaap_OtherAssetsMember_3970" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_3969" xlink:to="Locator_us-gaap_OtherAssetsMember_3970" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_3971" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember" xlink:label="Locator_us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_3972" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_3971" xlink:to="Locator_us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_3972" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsCommodityGainLossDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems" xlink:label="Locator_us-gaap_DerivativeInstrumentsGainLossLineItems_3997" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments" xlink:label="Locator_us-gaap_GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments_3998" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeInstrumentsGainLossLineItems_3997" xlink:to="Locator_us-gaap_GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments_3998" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems" xlink:label="Locator_us-gaap_DerivativeInstrumentsGainLossLineItems_3999" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:label="Locator_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_4000" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DerivativeInstrumentsGainLossLineItems_3999" xlink:to="Locator_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_4000" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:label="Locator_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_4001" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="Locator_us-gaap_IncomeStatementLocationAxis_4002" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_4001" xlink:to="Locator_us-gaap_IncomeStatementLocationAxis_4002" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="Locator_us-gaap_IncomeStatementLocationAxis_4003" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="Locator_us-gaap_IncomeStatementLocationDomain_4004" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_IncomeStatementLocationAxis_4003" xlink:to="Locator_us-gaap_IncomeStatementLocationDomain_4004" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="Locator_us-gaap_IncomeStatementLocationAxis_4005" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="Locator_us-gaap_IncomeStatementLocationDomain_4006" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_IncomeStatementLocationAxis_4005" xlink:to="Locator_us-gaap_IncomeStatementLocationDomain_4006" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="Locator_us-gaap_IncomeStatementLocationDomain_4007" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SalesMember" xlink:label="Locator_us-gaap_SalesMember_4008" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeStatementLocationDomain_4007" xlink:to="Locator_us-gaap_SalesMember_4008" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="Locator_us-gaap_IncomeStatementLocationDomain_4009" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherIncomeMember" xlink:label="Locator_us-gaap_OtherIncomeMember_4010" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeStatementLocationDomain_4009" xlink:to="Locator_us-gaap_OtherIncomeMember_4010" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="Locator_us-gaap_IncomeStatementLocationDomain_4011" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CostOfSalesMember" xlink:label="Locator_us-gaap_CostOfSalesMember_4012" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeStatementLocationDomain_4011" xlink:to="Locator_us-gaap_CostOfSalesMember_4012" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:label="Locator_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_4013" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="Locator_us-gaap_DerivativeInstrumentRiskAxis_4014" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_4013" xlink:to="Locator_us-gaap_DerivativeInstrumentRiskAxis_4014" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="Locator_us-gaap_DerivativeInstrumentRiskAxis_4015" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_4016" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_DerivativeInstrumentRiskAxis_4015" xlink:to="Locator_us-gaap_DerivativeContractTypeDomain_4016" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_4017" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommodityContractMember" xlink:label="Locator_us-gaap_CommodityContractMember_4018" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeContractTypeDomain_4017" xlink:to="Locator_us-gaap_CommodityContractMember_4018" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsCommodityNotionalDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="Locator_us-gaap_DerivativeInstrumentRiskAxis_4041" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_4042" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_DerivativeInstrumentRiskAxis_4041" xlink:to="Locator_us-gaap_DerivativeContractTypeDomain_4042" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="Locator_us-gaap_DerivativeInstrumentRiskAxis_4043" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_4044" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_DerivativeInstrumentRiskAxis_4043" xlink:to="Locator_us-gaap_DerivativeContractTypeDomain_4044" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_4045" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommodityContractMember" xlink:label="Locator_us-gaap_CommodityContractMember_4046" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeContractTypeDomain_4045" xlink:to="Locator_us-gaap_CommodityContractMember_4046" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ReserveQuantitiesByTypeOfReserveAxis" xlink:label="Locator_srt_ReserveQuantitiesByTypeOfReserveAxis_4047" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_TypeOfReserveDomain" xlink:label="Locator_srt_TypeOfReserveDomain_4048" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ReserveQuantitiesByTypeOfReserveAxis_4047" xlink:to="Locator_srt_TypeOfReserveDomain_4048" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ReserveQuantitiesByTypeOfReserveAxis" xlink:label="Locator_srt_ReserveQuantitiesByTypeOfReserveAxis_4049" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_TypeOfReserveDomain" xlink:label="Locator_srt_TypeOfReserveDomain_4050" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_srt_ReserveQuantitiesByTypeOfReserveAxis_4049" xlink:to="Locator_srt_TypeOfReserveDomain_4050" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_TypeOfReserveDomain" xlink:label="Locator_srt_TypeOfReserveDomain_4051" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_NaturalGasPowerAndCarbonDioxideEmissionsFlatPriceMember" xlink:label="Locator_cop_NaturalGasPowerAndCarbonDioxideEmissionsFlatPriceMember_4052" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_TypeOfReserveDomain_4051" xlink:to="Locator_cop_NaturalGasPowerAndCarbonDioxideEmissionsFlatPriceMember_4052" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_TypeOfReserveDomain" xlink:label="Locator_srt_TypeOfReserveDomain_4053" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_NaturalGasPowerAndCarbonDioxideEmissionsBasisMember" xlink:label="Locator_cop_NaturalGasPowerAndCarbonDioxideEmissionsBasisMember_4054" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_TypeOfReserveDomain_4053" xlink:to="Locator_cop_NaturalGasPowerAndCarbonDioxideEmissionsBasisMember_4054" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_TypeOfReserveDomain" xlink:label="Locator_srt_TypeOfReserveDomain_4055" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_NaturalGasLiquidsReservesMember" xlink:label="Locator_srt_NaturalGasLiquidsReservesMember_4056" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_TypeOfReserveDomain_4055" xlink:to="Locator_srt_NaturalGasLiquidsReservesMember_4056" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TradingActivityGainsAndLossesLineItems" xlink:label="Locator_us-gaap_TradingActivityGainsAndLossesLineItems_4057" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TradingActivitiesGainLossByTypeTable" xlink:label="Locator_us-gaap_TradingActivitiesGainLossByTypeTable_4058" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_TradingActivityGainsAndLossesLineItems_4057" xlink:to="Locator_us-gaap_TradingActivitiesGainLossByTypeTable_4058" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TradingActivitiesGainLossByTypeTable" xlink:label="Locator_us-gaap_TradingActivitiesGainLossByTypeTable_4059" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ReserveQuantitiesByTypeOfReserveAxis" xlink:label="Locator_srt_ReserveQuantitiesByTypeOfReserveAxis_4060" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_TradingActivitiesGainLossByTypeTable_4059" xlink:to="Locator_srt_ReserveQuantitiesByTypeOfReserveAxis_4060" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TradingActivitiesGainLossByTypeTable" xlink:label="Locator_us-gaap_TradingActivitiesGainLossByTypeTable_4061" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="Locator_us-gaap_DerivativeInstrumentRiskAxis_4062" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_TradingActivitiesGainLossByTypeTable_4061" xlink:to="Locator_us-gaap_DerivativeInstrumentRiskAxis_4062" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TradingActivitiesGainLossByTypeTable" xlink:label="Locator_us-gaap_TradingActivitiesGainLossByTypeTable_4063" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PositionAxis" xlink:label="Locator_us-gaap_PositionAxis_4064" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_TradingActivitiesGainLossByTypeTable_4063" xlink:to="Locator_us-gaap_PositionAxis_4064" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PositionAxis" xlink:label="Locator_us-gaap_PositionAxis_4065" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PositionDomain" xlink:label="Locator_us-gaap_PositionDomain_4066" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_PositionAxis_4065" xlink:to="Locator_us-gaap_PositionDomain_4066" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PositionAxis" xlink:label="Locator_us-gaap_PositionAxis_4067" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PositionDomain" xlink:label="Locator_us-gaap_PositionDomain_4068" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_PositionAxis_4067" xlink:to="Locator_us-gaap_PositionDomain_4068" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PositionDomain" xlink:label="Locator_us-gaap_PositionDomain_4069" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongMember" xlink:label="Locator_us-gaap_LongMember_4070" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PositionDomain_4069" xlink:to="Locator_us-gaap_LongMember_4070" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PositionDomain" xlink:label="Locator_us-gaap_PositionDomain_4071" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortMember" xlink:label="Locator_us-gaap_ShortMember_4072" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PositionDomain_4071" xlink:to="Locator_us-gaap_ShortMember_4072" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TradingActivityGainsAndLossesLineItems" xlink:label="Locator_us-gaap_TradingActivityGainsAndLossesLineItems_4073" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeNonmonetaryNotionalAmount" xlink:label="Locator_us-gaap_DerivativeNonmonetaryNotionalAmount_4074" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TradingActivityGainsAndLossesLineItems_4073" xlink:to="Locator_us-gaap_DerivativeNonmonetaryNotionalAmount_4074" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureContingenciesAndCommitmentsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_4357" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_EC" xlink:label="Locator_country_EC_4358" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_SegmentGeographicalDomain_4357" xlink:to="Locator_country_EC_4358" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_4359" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_VE" xlink:label="Locator_country_VE_4360" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_SegmentGeographicalDomain_4359" xlink:to="Locator_country_VE_4360" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementScenarioAxis" xlink:label="Locator_srt_StatementScenarioAxis_4361" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="Locator_srt_ScenarioUnspecifiedDomain_4362" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_StatementScenarioAxis_4361" xlink:to="Locator_srt_ScenarioUnspecifiedDomain_4362" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="Locator_srt_ScenarioUnspecifiedDomain_4363" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScenarioPlanMember" xlink:label="Locator_us-gaap_ScenarioPlanMember_4364" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ScenarioUnspecifiedDomain_4363" xlink:to="Locator_us-gaap_ScenarioPlanMember_4364" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="Locator_srt_StatementGeographicalAxis_4365" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_4366" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_StatementGeographicalAxis_4365" xlink:to="Locator_srt_SegmentGeographicalDomain_4366" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesAxis" xlink:label="Locator_srt_ConsolidatedEntitiesAxis_4377" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:label="Locator_srt_ConsolidatedEntitiesDomain_4378" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ConsolidatedEntitiesAxis_4377" xlink:to="Locator_srt_ConsolidatedEntitiesDomain_4378" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesAxis" xlink:label="Locator_srt_ConsolidatedEntitiesAxis_4441" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:label="Locator_srt_ConsolidatedEntitiesDomain_4442" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_srt_ConsolidatedEntitiesAxis_4441" xlink:to="Locator_srt_ConsolidatedEntitiesDomain_4442" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:label="Locator_srt_ConsolidatedEntitiesDomain_4379" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BurlingtonResourcesIncMember" xlink:label="Locator_cop_BurlingtonResourcesIncMember_4380" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidatedEntitiesDomain_4379" xlink:to="Locator_cop_BurlingtonResourcesIncMember_4380" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:label="Locator_srt_ConsolidatedEntitiesDomain_4381" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_TheLouisianaLandAndExplorationCompanyLlcMember" xlink:label="Locator_cop_TheLouisianaLandAndExplorationCompanyLlcMember_4382" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidatedEntitiesDomain_4381" xlink:to="Locator_cop_TheLouisianaLandAndExplorationCompanyLlcMember_4382" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:label="Locator_srt_ConsolidatedEntitiesDomain_4383" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ConocophillipsEntitiesMember" xlink:label="Locator_cop_ConocophillipsEntitiesMember_4384" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidatedEntitiesDomain_4383" xlink:to="Locator_cop_ConocophillipsEntitiesMember_4384" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipAxis" xlink:label="Locator_srt_OwnershipAxis_4367" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipDomain" xlink:label="Locator_srt_OwnershipDomain_4368" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_OwnershipAxis_4367" xlink:to="Locator_srt_OwnershipDomain_4368" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipDomain" xlink:label="Locator_srt_OwnershipDomain_4369" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PhillipsPetroleumCompanyMember" xlink:label="Locator_cop_PhillipsPetroleumCompanyMember_4370" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_OwnershipDomain_4369" xlink:to="Locator_cop_PhillipsPetroleumCompanyMember_4370" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_4407" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LettersOfCreditOutstandingAmount" xlink:label="Locator_us-gaap_LettersOfCreditOutstandingAmount_4408" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingenciesLineItems_4407" xlink:to="Locator_us-gaap_LettersOfCreditOutstandingAmount_4408" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_4409" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LitigationSettlementAmountAwardedFromOtherParty" xlink:label="Locator_us-gaap_LitigationSettlementAmountAwardedFromOtherParty_4410" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingenciesLineItems_4409" xlink:to="Locator_us-gaap_LitigationSettlementAmountAwardedFromOtherParty_4410" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_4411" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LitigationSettlementAmountAwardedFromOtherPartyRevised" xlink:label="Locator_cop_LitigationSettlementAmountAwardedFromOtherPartyRevised_4412" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingenciesLineItems_4411" xlink:to="Locator_cop_LitigationSettlementAmountAwardedFromOtherPartyRevised_4412" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_4413" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LitigationAwardReduction" xlink:label="Locator_cop_LitigationAwardReduction_4414" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingenciesLineItems_4413" xlink:to="Locator_cop_LitigationAwardReduction_4414" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_4415" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LitigationSettlementAmountAwardedToOtherParty" xlink:label="Locator_us-gaap_LitigationSettlementAmountAwardedToOtherParty_4416" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingenciesLineItems_4415" xlink:to="Locator_us-gaap_LitigationSettlementAmountAwardedToOtherParty_4416" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_4417" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OffsetForCounterClaim" xlink:label="Locator_cop_OffsetForCounterClaim_4418" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingenciesLineItems_4417" xlink:to="Locator_cop_OffsetForCounterClaim_4418" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_4419" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingencySettlementAgreementTerms" xlink:label="Locator_us-gaap_LossContingencySettlementAgreementTerms_4420" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingenciesLineItems_4419" xlink:to="Locator_us-gaap_LossContingencySettlementAgreementTerms_4420" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_4423" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SettlementAmountAwardedToOtherPartyThroughThirdParty" xlink:label="Locator_cop_SettlementAmountAwardedToOtherPartyThroughThirdParty_4424" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingenciesLineItems_4423" xlink:to="Locator_cop_SettlementAmountAwardedToOtherPartyThroughThirdParty_4424" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_4425" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_InventoryReceivedForSettlement" xlink:label="Locator_cop_InventoryReceivedForSettlement_4426" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingenciesLineItems_4425" xlink:to="Locator_cop_InventoryReceivedForSettlement_4426" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_4427" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_TotalProceedsFromLegalSettlement" xlink:label="Locator_cop_TotalProceedsFromLegalSettlement_4428" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingenciesLineItems_4427" xlink:to="Locator_cop_TotalProceedsFromLegalSettlement_4428" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_4429" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingencyDamagesSoughtValue" xlink:label="Locator_us-gaap_LossContingencyDamagesSoughtValue_4430" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingenciesLineItems_4429" xlink:to="Locator_us-gaap_LossContingencyDamagesSoughtValue_4430" order="12.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_4431" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LitigationSettlementAmountAwardedFromOtherPartyInitialPaymentAmount" xlink:label="Locator_cop_LitigationSettlementAmountAwardedFromOtherPartyInitialPaymentAmount_4432" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingenciesLineItems_4431" xlink:to="Locator_cop_LitigationSettlementAmountAwardedFromOtherPartyInitialPaymentAmount_4432" order="13.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_4433" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SettlementAgreementPaymentInstallmentTotal" xlink:label="Locator_cop_SettlementAgreementPaymentInstallmentTotal_4434" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingenciesLineItems_4433" xlink:to="Locator_cop_SettlementAgreementPaymentInstallmentTotal_4434" order="14.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_4435" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="Locator_us-gaap_EquityMethodInvestmentOwnershipPercentage_4436" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingenciesLineItems_4435" xlink:to="Locator_us-gaap_EquityMethodInvestmentOwnershipPercentage_4436" order="15.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_4437" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SaleOfInterestDuration" xlink:label="Locator_cop_SaleOfInterestDuration_4438" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingenciesLineItems_4437" xlink:to="Locator_cop_SaleOfInterestDuration_4438" order="16.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_4335" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="Locator_us-gaap_LossContingenciesTable_4336" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_LossContingenciesLineItems_4335" xlink:to="Locator_us-gaap_LossContingenciesTable_4336" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="Locator_us-gaap_LossContingenciesTable_4341" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:label="Locator_us-gaap_LossContingenciesByNatureOfContingencyAxis_4342" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_LossContingenciesTable_4341" xlink:to="Locator_us-gaap_LossContingenciesByNatureOfContingencyAxis_4342" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:label="Locator_us-gaap_LossContingenciesByNatureOfContingencyAxis_4371" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="Locator_us-gaap_LossContingencyNatureDomain_4372" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_LossContingenciesByNatureOfContingencyAxis_4371" xlink:to="Locator_us-gaap_LossContingencyNatureDomain_4372" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:label="Locator_us-gaap_LossContingenciesByNatureOfContingencyAxis_4439" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="Locator_us-gaap_LossContingencyNatureDomain_4440" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_LossContingenciesByNatureOfContingencyAxis_4439" xlink:to="Locator_us-gaap_LossContingencyNatureDomain_4440" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="Locator_us-gaap_LossContingencyNatureDomain_4373" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsMember" xlink:label="Locator_us-gaap_GuaranteeObligationsMember_4374" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingencyNatureDomain_4373" xlink:to="Locator_us-gaap_GuaranteeObligationsMember_4374" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsMember" xlink:label="Locator_us-gaap_GuaranteeObligationsMember_4375" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PerformanceGuaranteeMember" xlink:label="Locator_us-gaap_PerformanceGuaranteeMember_4376" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GuaranteeObligationsMember_4375" xlink:to="Locator_us-gaap_PerformanceGuaranteeMember_4376" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="Locator_us-gaap_LossContingenciesTable_4345" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesAxis" xlink:label="Locator_srt_ConsolidatedEntitiesAxis_4346" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_LossContingenciesTable_4345" xlink:to="Locator_srt_ConsolidatedEntitiesAxis_4346" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="Locator_us-gaap_LossContingenciesTable_4347" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="Locator_srt_StatementGeographicalAxis_4348" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_LossContingenciesTable_4347" xlink:to="Locator_srt_StatementGeographicalAxis_4348" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="Locator_us-gaap_LossContingenciesTable_4349" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementScenarioAxis" xlink:label="Locator_srt_StatementScenarioAxis_4350" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_LossContingenciesTable_4349" xlink:to="Locator_srt_StatementScenarioAxis_4350" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="Locator_us-gaap_LossContingenciesTable_4351" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EnvironmentalRemediationContingencyAxis" xlink:label="Locator_us-gaap_EnvironmentalRemediationContingencyAxis_4352" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_LossContingenciesTable_4351" xlink:to="Locator_us-gaap_EnvironmentalRemediationContingencyAxis_4352" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EnvironmentalRemediationContingencyAxis" xlink:label="Locator_us-gaap_EnvironmentalRemediationContingencyAxis_4385" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EnvironmentalRemediationContingencyDomain" xlink:label="Locator_us-gaap_EnvironmentalRemediationContingencyDomain_4386" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_EnvironmentalRemediationContingencyAxis_4385" xlink:to="Locator_us-gaap_EnvironmentalRemediationContingencyDomain_4386" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EnvironmentalRemediationContingencyDomain" xlink:label="Locator_us-gaap_EnvironmentalRemediationContingencyDomain_4387" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CleanupRemediationActivitiesMember" xlink:label="Locator_cop_CleanupRemediationActivitiesMember_4388" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_EnvironmentalRemediationContingencyDomain_4387" xlink:to="Locator_cop_CleanupRemediationActivitiesMember_4388" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="Locator_us-gaap_LossContingenciesTable_4353" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_LegalEntityAxis" xlink:label="Locator_dei_LegalEntityAxis_4354" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_LossContingenciesTable_4353" xlink:to="Locator_dei_LegalEntityAxis_4354" order="7.0" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_LegalEntityAxis" xlink:label="Locator_dei_LegalEntityAxis_4389" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityDomain" xlink:label="Locator_dei_EntityDomain_4390" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_dei_LegalEntityAxis_4389" xlink:to="Locator_dei_EntityDomain_4390" order="1.0" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_LegalEntityAxis" xlink:label="Locator_dei_LegalEntityAxis_4445" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityDomain" xlink:label="Locator_dei_EntityDomain_4446" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_dei_LegalEntityAxis_4445" xlink:to="Locator_dei_EntityDomain_4446" order="1.0" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityDomain" xlink:label="Locator_dei_EntityDomain_4391" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PenrencoEcuadorLimitedMember" xlink:label="Locator_cop_PenrencoEcuadorLimitedMember_4392" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_dei_EntityDomain_4391" xlink:to="Locator_cop_PenrencoEcuadorLimitedMember_4392" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="Locator_us-gaap_LossContingenciesTable_4355" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipAxis" xlink:label="Locator_srt_OwnershipAxis_4356" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_LossContingenciesTable_4355" xlink:to="Locator_srt_OwnershipAxis_4356" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="Locator_us-gaap_LossContingenciesTable_4343" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseAxis" xlink:label="Locator_srt_LitigationCaseAxis_4344" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_LossContingenciesTable_4343" xlink:to="Locator_srt_LitigationCaseAxis_4344" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseAxis" xlink:label="Locator_srt_LitigationCaseAxis_4393" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="Locator_srt_LitigationCaseTypeDomain_4394" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_LitigationCaseAxis_4393" xlink:to="Locator_srt_LitigationCaseTypeDomain_4394" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseAxis" xlink:label="Locator_srt_LitigationCaseAxis_4443" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="Locator_srt_LitigationCaseTypeDomain_4444" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_srt_LitigationCaseAxis_4443" xlink:to="Locator_srt_LitigationCaseTypeDomain_4444" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="Locator_srt_LitigationCaseTypeDomain_4399" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ConocoPhillipsVersusPetroleosDeVenezuela2Member" xlink:label="Locator_cop_ConocoPhillipsVersusPetroleosDeVenezuela2Member_4400" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_LitigationCaseTypeDomain_4399" xlink:to="Locator_cop_ConocoPhillipsVersusPetroleosDeVenezuela2Member_4400" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="Locator_srt_LitigationCaseTypeDomain_4401" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ConocoPhillipsVersusPetroleosDeVenezuela3Member" xlink:label="Locator_cop_ConocoPhillipsVersusPetroleosDeVenezuela3Member_4402" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_LitigationCaseTypeDomain_4401" xlink:to="Locator_cop_ConocoPhillipsVersusPetroleosDeVenezuela3Member_4402" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="Locator_srt_LitigationCaseTypeDomain_4403" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SeveralLouisianaParishesAndTheStateOfLouisianaAgainstOilAndGasCompaniesMember" xlink:label="Locator_cop_SeveralLouisianaParishesAndTheStateOfLouisianaAgainstOilAndGasCompaniesMember_4404" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_LitigationCaseTypeDomain_4403" xlink:to="Locator_cop_SeveralLouisianaParishesAndTheStateOfLouisianaAgainstOilAndGasCompaniesMember_4404" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="Locator_srt_LitigationCaseTypeDomain_4405" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OuterContinentalShelfLeaseMember" xlink:label="Locator_cop_OuterContinentalShelfLeaseMember_4406" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_LitigationCaseTypeDomain_4405" xlink:to="Locator_cop_OuterContinentalShelfLeaseMember_4406" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="Locator_srt_LitigationCaseTypeDomain_4397" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ConocoPhillipsVsPetroleosDeVenezuelaSAMember" xlink:label="Locator_cop_ConocoPhillipsVsPetroleosDeVenezuelaSAMember_4398" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_LitigationCaseTypeDomain_4397" xlink:to="Locator_cop_ConocoPhillipsVsPetroleosDeVenezuelaSAMember_4398" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="Locator_srt_LitigationCaseTypeDomain_4395" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BurlingtonResourcesIncVsTheRepublicOfEcuadorMember" xlink:label="Locator_cop_BurlingtonResourcesIncVsTheRepublicOfEcuadorMember_4396" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_LitigationCaseTypeDomain_4395" xlink:to="Locator_cop_BurlingtonResourcesIncVsTheRepublicOfEcuadorMember_4396" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_4421" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromLegalSettlements" xlink:label="Locator_us-gaap_ProceedsFromLegalSettlements_4422" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingenciesLineItems_4421" xlink:to="Locator_us-gaap_ProceedsFromLegalSettlements_4422" order="8.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/GuaranteesTextualDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="Locator_srt_RangeAxis_4529" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_4530" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_RangeAxis_4529" xlink:to="Locator_srt_RangeMember_4530" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_4531" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember" xlink:label="Locator_srt_MinimumMember_4532" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RangeMember_4531" xlink:to="Locator_srt_MinimumMember_4532" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_4533" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember" xlink:label="Locator_srt_MaximumMember_4534" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RangeMember_4533" xlink:to="Locator_srt_MaximumMember_4534" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_4535" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_4536" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_4535" xlink:to="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_4536" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_4537" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_UKSubsidiariesMember" xlink:label="Locator_cop_UKSubsidiariesMember_4538" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_4537" xlink:to="Locator_cop_UKSubsidiariesMember_4538" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsLineItems" xlink:label="Locator_us-gaap_GuaranteeObligationsLineItems_4539" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfGuaranteeObligationsTable" xlink:label="Locator_us-gaap_ScheduleOfGuaranteeObligationsTable_4540" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_GuaranteeObligationsLineItems_4539" xlink:to="Locator_us-gaap_ScheduleOfGuaranteeObligationsTable_4540" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfGuaranteeObligationsTable" xlink:label="Locator_us-gaap_ScheduleOfGuaranteeObligationsTable_4541" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsByNatureAxis" xlink:label="Locator_us-gaap_GuaranteeObligationsByNatureAxis_4542" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfGuaranteeObligationsTable_4541" xlink:to="Locator_us-gaap_GuaranteeObligationsByNatureAxis_4542" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsByNatureAxis" xlink:label="Locator_us-gaap_GuaranteeObligationsByNatureAxis_4543" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="Locator_us-gaap_GuaranteeObligationsNatureDomain_4544" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_GuaranteeObligationsByNatureAxis_4543" xlink:to="Locator_us-gaap_GuaranteeObligationsNatureDomain_4544" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsByNatureAxis" xlink:label="Locator_us-gaap_GuaranteeObligationsByNatureAxis_4545" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="Locator_us-gaap_GuaranteeObligationsNatureDomain_4546" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_GuaranteeObligationsByNatureAxis_4545" xlink:to="Locator_us-gaap_GuaranteeObligationsNatureDomain_4546" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="Locator_us-gaap_GuaranteeObligationsNatureDomain_4547" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ContinuedDevelopmentMember" xlink:label="Locator_cop_ContinuedDevelopmentMember_4548" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GuaranteeObligationsNatureDomain_4547" xlink:to="Locator_cop_ContinuedDevelopmentMember_4548" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="Locator_us-gaap_GuaranteeObligationsNatureDomain_4549" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeTypeOtherMember" xlink:label="Locator_us-gaap_GuaranteeTypeOtherMember_4550" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GuaranteeObligationsNatureDomain_4549" xlink:to="Locator_us-gaap_GuaranteeTypeOtherMember_4550" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="Locator_us-gaap_GuaranteeObligationsNatureDomain_4551" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IndemnificationGuaranteeMember" xlink:label="Locator_us-gaap_IndemnificationGuaranteeMember_4552" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GuaranteeObligationsNatureDomain_4551" xlink:to="Locator_us-gaap_IndemnificationGuaranteeMember_4552" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="Locator_us-gaap_GuaranteeObligationsNatureDomain_4553" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_GuaranteeNaturalGasDeliveryMember" xlink:label="Locator_cop_GuaranteeNaturalGasDeliveryMember_4554" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GuaranteeObligationsNatureDomain_4553" xlink:to="Locator_cop_GuaranteeNaturalGasDeliveryMember_4554" order="4.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_GuaranteeNaturalGasDeliveryMember" xlink:label="Locator_cop_GuaranteeNaturalGasDeliveryMember_4555" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_MaxPotentialFuturePaymentsRecklessBreachMember" xlink:label="Locator_cop_MaxPotentialFuturePaymentsRecklessBreachMember_4556" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_GuaranteeNaturalGasDeliveryMember_4555" xlink:to="Locator_cop_MaxPotentialFuturePaymentsRecklessBreachMember_4556" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_GuaranteeNaturalGasDeliveryMember" xlink:label="Locator_cop_GuaranteeNaturalGasDeliveryMember_4557" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_MaxPotentialFuturePaymentsProrataShareMember" xlink:label="Locator_cop_MaxPotentialFuturePaymentsProrataShareMember_4558" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_GuaranteeNaturalGasDeliveryMember_4557" xlink:to="Locator_cop_MaxPotentialFuturePaymentsProrataShareMember_4558" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="Locator_us-gaap_GuaranteeObligationsNatureDomain_4559" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FinanceReserveGuaranteeMember" xlink:label="Locator_cop_FinanceReserveGuaranteeMember_4560" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GuaranteeObligationsNatureDomain_4559" xlink:to="Locator_cop_FinanceReserveGuaranteeMember_4560" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfGuaranteeObligationsTable" xlink:label="Locator_us-gaap_ScheduleOfGuaranteeObligationsTable_4561" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="Locator_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_4562" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfGuaranteeObligationsTable_4561" xlink:to="Locator_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_4562" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="Locator_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_4563" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="Locator_srt_EquityMethodInvesteeNameDomain_4564" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_4563" xlink:to="Locator_srt_EquityMethodInvesteeNameDomain_4564" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="Locator_srt_EquityMethodInvesteeNameDomain_4565" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AustraliaPacificLNGMember" xlink:label="Locator_cop_AustraliaPacificLNGMember_4566" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_EquityMethodInvesteeNameDomain_4565" xlink:to="Locator_cop_AustraliaPacificLNGMember_4566" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfGuaranteeObligationsTable" xlink:label="Locator_us-gaap_ScheduleOfGuaranteeObligationsTable_4567" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_4568" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfGuaranteeObligationsTable_4567" xlink:to="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_4568" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfGuaranteeObligationsTable" xlink:label="Locator_us-gaap_ScheduleOfGuaranteeObligationsTable_4569" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="Locator_srt_RangeAxis_4570" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfGuaranteeObligationsTable_4569" xlink:to="Locator_srt_RangeAxis_4570" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsLineItems" xlink:label="Locator_us-gaap_GuaranteeObligationsLineItems_4571" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="Locator_us-gaap_EquityMethodInvestmentOwnershipPercentage_4572" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GuaranteeObligationsLineItems_4571" xlink:to="Locator_us-gaap_EquityMethodInvestmentOwnershipPercentage_4572" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsLineItems" xlink:label="Locator_us-gaap_GuaranteeObligationsLineItems_4573" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsMaximumExposure" xlink:label="Locator_us-gaap_GuaranteeObligationsMaximumExposure_4574" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GuaranteeObligationsLineItems_4573" xlink:to="Locator_us-gaap_GuaranteeObligationsMaximumExposure_4574" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsLineItems" xlink:label="Locator_us-gaap_GuaranteeObligationsLineItems_4575" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsTerm" xlink:label="Locator_us-gaap_GuaranteeObligationsTerm_4576" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GuaranteeObligationsLineItems_4575" xlink:to="Locator_us-gaap_GuaranteeObligationsTerm_4576" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsLineItems" xlink:label="Locator_us-gaap_GuaranteeObligationsLineItems_4577" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingencies" xlink:label="Locator_us-gaap_AccrualForEnvironmentalLossContingencies_4578" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GuaranteeObligationsLineItems_4577" xlink:to="Locator_us-gaap_AccrualForEnvironmentalLossContingencies_4578" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsLineItems" xlink:label="Locator_us-gaap_GuaranteeObligationsLineItems_4579" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GuaranteeObligationsCurrentCarryingValue" xlink:label="Locator_us-gaap_GuaranteeObligationsCurrentCarryingValue_4580" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_GuaranteeObligationsLineItems_4579" xlink:to="Locator_us-gaap_GuaranteeObligationsCurrentCarryingValue_4580" order="5.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureRelatedPartyTransactionsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="Locator_us-gaap_RelatedPartyDomain_4645" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_AffiliatedEntityMember" xlink:label="Locator_srt_AffiliatedEntityMember_4646" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RelatedPartyDomain_4645" xlink:to="Locator_srt_AffiliatedEntityMember_4646" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="Locator_us-gaap_RelatedPartyTransactionLineItems_4651" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="Locator_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_4652" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_RelatedPartyTransactionLineItems_4651" xlink:to="Locator_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_4652" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="Locator_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_4653" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="Locator_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_4654" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_4653" xlink:to="Locator_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_4654" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="Locator_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_4647" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="Locator_us-gaap_RelatedPartyDomain_4648" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_4647" xlink:to="Locator_us-gaap_RelatedPartyDomain_4648" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="Locator_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_4649" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="Locator_us-gaap_RelatedPartyDomain_4650" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_4649" xlink:to="Locator_us-gaap_RelatedPartyDomain_4650" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="Locator_us-gaap_RelatedPartyTransactionLineItems_4655" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueFromRelatedParties" xlink:label="Locator_us-gaap_RevenueFromRelatedParties_4656" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RelatedPartyTransactionLineItems_4655" xlink:to="Locator_us-gaap_RevenueFromRelatedParties_4656" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="Locator_us-gaap_RelatedPartyTransactionLineItems_4657" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty" xlink:label="Locator_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_4658" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RelatedPartyTransactionLineItems_4657" xlink:to="Locator_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_4658" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="Locator_us-gaap_RelatedPartyTransactionLineItems_4659" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty" xlink:label="Locator_us-gaap_RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty_4660" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RelatedPartyTransactionLineItems_4659" xlink:to="Locator_us-gaap_RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty_4660" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="Locator_us-gaap_RelatedPartyTransactionLineItems_4661" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="Locator_us-gaap_InterestIncomeExpenseNet_4662" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RelatedPartyTransactionLineItems_4661" xlink:to="Locator_us-gaap_InterestIncomeExpenseNet_4662" order="4.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureEmployeeBenefitPlansAmountsRecognizedInBalanceSheetAndAssumptionsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_4779" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_4780" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_4779" xlink:to="Locator_us-gaap_DomesticPlanMember_4780" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_4781" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_US" xlink:label="Locator_country_US_4782" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DomesticPlanMember_4781" xlink:to="Locator_country_US_4782" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_4783" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="Locator_us-gaap_ForeignPlanMember_4784" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_4783" xlink:to="Locator_us-gaap_ForeignPlanMember_4784" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_4785" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_4786" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_4785" xlink:to="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_4786" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_4787" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_PensionPlansDefinedBenefitMember_4788" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_4787" xlink:to="Locator_us-gaap_PensionPlansDefinedBenefitMember_4788" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_4789" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_4790" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_4789" xlink:to="Locator_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_4790" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_4791" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent" xlink:label="Locator_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_4792" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_4791" xlink:to="Locator_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_4792" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_4793" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities" xlink:label="Locator_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_4794" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_4793" xlink:to="Locator_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_4794" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_4795" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="Locator_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_4796" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_4795" xlink:to="Locator_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_4796" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_4797" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet" xlink:label="Locator_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_4798" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_4797" xlink:to="Locator_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_4798" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_4799" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_4800" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_4799" xlink:to="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_4800" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_4801" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate" xlink:label="Locator_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_4802" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_4801" xlink:to="Locator_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_4802" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_4803" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease" xlink:label="Locator_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_4804" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_4803" xlink:to="Locator_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_4804" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_4805" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate" xlink:label="Locator_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate_4806" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_4805" xlink:to="Locator_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate_4806" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_4807" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_4808" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_4807" xlink:to="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_4808" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_4809" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate" xlink:label="Locator_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_4810" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_4809" xlink:to="Locator_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_4810" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_4811" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets" xlink:label="Locator_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_4812" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_4811" xlink:to="Locator_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_4812" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_4813" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease" xlink:label="Locator_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_4814" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_4813" xlink:to="Locator_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_4814" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_4815" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostWeightedAverageInterestCreditingRate" xlink:label="Locator_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostWeightedAverageInterestCreditingRate_4816" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_4815" xlink:to="Locator_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostWeightedAverageInterestCreditingRate_4816" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_4817" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_4818" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_4817" xlink:to="Locator_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_4818" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_4819" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax" xlink:label="Locator_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_4820" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_4819" xlink:to="Locator_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_4820" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_4821" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax" xlink:label="Locator_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_4822" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_4821" xlink:to="Locator_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_4822" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_4823" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_4824" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_4823" xlink:to="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_4824" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_4825" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_4826" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_4825" xlink:to="Locator_us-gaap_RetirementPlanTypeAxis_4826" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_4827" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_4828" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanTypeAxis_4827" xlink:to="Locator_us-gaap_RetirementPlanTypeDomain_4828" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_4829" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_4830" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_4829" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationAxis_4830" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_4831" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_4832" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationAxis_4831" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationDomain_4832" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureDebtDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="Locator_us-gaap_DebtInstrumentLineItems_4905" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="Locator_us-gaap_DebtInstrumentTable_4906" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DebtInstrumentLineItems_4905" xlink:to="Locator_us-gaap_DebtInstrumentTable_4906" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="Locator_us-gaap_DebtInstrumentTable_4907" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="Locator_us-gaap_DebtInstrumentAxis_4908" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DebtInstrumentTable_4907" xlink:to="Locator_us-gaap_DebtInstrumentAxis_4908" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="Locator_us-gaap_DebtInstrumentAxis_4909" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4910" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_DebtInstrumentAxis_4909" xlink:to="Locator_us-gaap_DebtInstrumentNameDomain_4910" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="Locator_us-gaap_DebtInstrumentAxis_4911" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4912" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_DebtInstrumentAxis_4911" xlink:to="Locator_us-gaap_DebtInstrumentNameDomain_4912" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4913" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_NinePointOneTwoFiveNotesMember" xlink:label="Locator_cop_NinePointOneTwoFiveNotesMember_4914" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4913" xlink:to="Locator_cop_NinePointOneTwoFiveNotesMember_4914" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4915" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EightPointTwoPercentNotesMember" xlink:label="Locator_cop_EightPointTwoPercentNotesMember_4916" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4915" xlink:to="Locator_cop_EightPointTwoPercentNotesMember_4916" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4917" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EightPointOneTwoFivePercentNotesMember" xlink:label="Locator_cop_EightPointOneTwoFivePercentNotesMember_4918" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4917" xlink:to="Locator_cop_EightPointOneTwoFivePercentNotesMember_4918" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4919" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SevenPointNinePercentNotesMember" xlink:label="Locator_cop_SevenPointNinePercentNotesMember_4920" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4919" xlink:to="Locator_cop_SevenPointNinePercentNotesMember_4920" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4921" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SevenPointEightPercentNotesMember" xlink:label="Locator_cop_SevenPointEightPercentNotesMember_4922" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4921" xlink:to="Locator_cop_SevenPointEightPercentNotesMember_4922" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4923" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SevenPointSixFivePercentNotesMember" xlink:label="Locator_cop_SevenPointSixFivePercentNotesMember_4924" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4923" xlink:to="Locator_cop_SevenPointSixFivePercentNotesMember_4924" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4925" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SevenPointFourPercentNotesMember" xlink:label="Locator_cop_SevenPointFourPercentNotesMember_4926" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4925" xlink:to="Locator_cop_SevenPointFourPercentNotesMember_4926" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4927" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SevenPointThreeSevenFivePercentNotesMember" xlink:label="Locator_cop_SevenPointThreeSevenFivePercentNotesMember_4928" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4927" xlink:to="Locator_cop_SevenPointThreeSevenFivePercentNotesMember_4928" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4929" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SevenPointTwoFivePercentNotesMember" xlink:label="Locator_cop_SevenPointTwoFivePercentNotesMember_4930" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4929" xlink:to="Locator_cop_SevenPointTwoFivePercentNotesMember_4930" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4931" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SevenPointTwoPercentNotesMember" xlink:label="Locator_cop_SevenPointTwoPercentNotesMember_4932" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4931" xlink:to="Locator_cop_SevenPointTwoPercentNotesMember_4932" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4933" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SevenPercentNotesMember" xlink:label="Locator_cop_SevenPercentNotesMember_4934" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4933" xlink:to="Locator_cop_SevenPercentNotesMember_4934" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4935" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SixPointNiveFivePercentNotesMember" xlink:label="Locator_cop_SixPointNiveFivePercentNotesMember_4936" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4935" xlink:to="Locator_cop_SixPointNiveFivePercentNotesMember_4936" order="12.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4937" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SixPointEightSevenFiveNotesMember" xlink:label="Locator_cop_SixPointEightSevenFiveNotesMember_4938" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4937" xlink:to="Locator_cop_SixPointEightSevenFiveNotesMember_4938" order="13.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4939" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SixPointFivePercentNotesMember" xlink:label="Locator_cop_SixPointFivePercentNotesMember_4940" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4939" xlink:to="Locator_cop_SixPointFivePercentNotesMember_4940" order="14.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4941" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FivePointNineFiveOnePercentNotesMember" xlink:label="Locator_cop_FivePointNineFiveOnePercentNotesMember_4942" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4941" xlink:to="Locator_cop_FivePointNineFiveOnePercentNotesMember_4942" order="15.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4943" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FivepointninefivepercentnotesmemberMember" xlink:label="Locator_cop_FivepointninefivepercentnotesmemberMember_4944" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4943" xlink:to="Locator_cop_FivepointninefivepercentnotesmemberMember_4944" order="16.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4945" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FivePointNinePercentNotesMember" xlink:label="Locator_cop_FivePointNinePercentNotesMember_4946" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4945" xlink:to="Locator_cop_FivePointNinePercentNotesMember_4946" order="17.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4947" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FourPointNiveFiveNotesMember" xlink:label="Locator_cop_FourPointNiveFiveNotesMember_4948" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4947" xlink:to="Locator_cop_FourPointNiveFiveNotesMember_4948" order="18.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4949" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FourPointThreePercentNotesMember" xlink:label="Locator_cop_FourPointThreePercentNotesMember_4950" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4949" xlink:to="Locator_cop_FourPointThreePercentNotesMember_4950" order="19.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4951" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FourPointTwoPercentNotesMember" xlink:label="Locator_cop_FourPointTwoPercentNotesMember_4952" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4951" xlink:to="Locator_cop_FourPointTwoPercentNotesMember_4952" order="20.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4953" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FourPointOneFivePercentNotesMember" xlink:label="Locator_cop_FourPointOneFivePercentNotesMember_4954" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4953" xlink:to="Locator_cop_FourPointOneFivePercentNotesMember_4954" order="21.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4955" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ThreePointThreeFivePercentNotesMember" xlink:label="Locator_cop_ThreePointThreeFivePercentNotesMember_4956" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4955" xlink:to="Locator_cop_ThreePointThreeFivePercentNotesMember_4956" order="22.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4957" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_TwoPointEightSevenFivePercentNotesMember" xlink:label="Locator_cop_TwoPointEightSevenFivePercentNotesMember_4958" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4957" xlink:to="Locator_cop_TwoPointEightSevenFivePercentNotesMember_4958" order="23.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4959" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_TwoPointFourPercentNotesMember" xlink:label="Locator_cop_TwoPointFourPercentNotesMember_4960" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4959" xlink:to="Locator_cop_TwoPointFourPercentNotesMember_4960" order="24.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4961" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_TwoPointTwoPercentNotesMember" xlink:label="Locator_cop_TwoPointTwoPercentNotesMember_4962" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4961" xlink:to="Locator_cop_TwoPointTwoPercentNotesMember_4962" order="25.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4963" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FloatingRateNoteOnePointTwoFourPercentToOnePointSevenFivePercentMember" xlink:label="Locator_cop_FloatingRateNoteOnePointTwoFourPercentToOnePointSevenFivePercentMember_4964" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4963" xlink:to="Locator_cop_FloatingRateNoteOnePointTwoFourPercentToOnePointSevenFivePercentMember_4964" order="26.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4965" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FloatingRateOnePointEightOnePercentToTwoPointThreeTwoPercentMember" xlink:label="Locator_cop_FloatingRateOnePointEightOnePercentToTwoPointThreeTwoPercentMember_4966" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4965" xlink:to="Locator_cop_FloatingRateOnePointEightOnePercentToTwoPointThreeTwoPercentMember_4966" order="27.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4967" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_MarineTerminalRevenueRefundingBondsMember" xlink:label="Locator_cop_MarineTerminalRevenueRefundingBondsMember_4968" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4967" xlink:to="Locator_cop_MarineTerminalRevenueRefundingBondsMember_4968" order="28.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4969" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CommercialPaperDue2020Member" xlink:label="Locator_cop_CommercialPaperDue2020Member_4970" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4969" xlink:to="Locator_cop_CommercialPaperDue2020Member_4970" order="29.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4971" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ZeroPointSixFourToOnePointSevenFourPercentIndustrialDevelopmentBondsMember" xlink:label="Locator_cop_ZeroPointSixFourToOnePointSevenFourPercentIndustrialDevelopmentBondsMember_4972" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4971" xlink:to="Locator_cop_ZeroPointSixFourToOnePointSevenFourPercentIndustrialDevelopmentBondsMember_4972" order="30.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="Locator_us-gaap_DebtInstrumentNameDomain_4973" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherDebtMember" xlink:label="Locator_cop_OtherDebtMember_4974" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentNameDomain_4973" xlink:to="Locator_cop_OtherDebtMember_4974" order="31.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="Locator_us-gaap_DebtInstrumentTable_4975" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodAxis_4976" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DebtInstrumentTable_4975" xlink:to="Locator_us-gaap_DebtInstrumentRedemptionPeriodAxis_4976" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodAxis_4977" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4978" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodAxis_4977" xlink:to="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4978" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodAxis_4979" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4980" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodAxis_4979" xlink:to="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4980" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4981" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodOneMember" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodOneMember_4982" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4981" xlink:to="Locator_us-gaap_DebtInstrumentRedemptionPeriodOneMember_4982" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4983" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodTwoMember" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodTwoMember_4984" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4983" xlink:to="Locator_us-gaap_DebtInstrumentRedemptionPeriodTwoMember_4984" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4985" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodFourMember" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodFourMember_4986" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4985" xlink:to="Locator_us-gaap_DebtInstrumentRedemptionPeriodFourMember_4986" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4987" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodFiveMember" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodFiveMember_4988" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4987" xlink:to="Locator_us-gaap_DebtInstrumentRedemptionPeriodFiveMember_4988" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4989" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodSixMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodSixMember_4990" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4989" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodSixMember_4990" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4991" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodSevenMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodSevenMember_4992" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4991" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodSevenMember_4992" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4993" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodEightMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodEightMember_4994" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4993" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodEightMember_4994" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4995" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodNineMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodNineMember_4996" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4995" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodNineMember_4996" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4997" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodTenMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodTenMember_4998" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4997" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodTenMember_4998" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4999" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodTwelveMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodTwelveMember_5000" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_4999" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodTwelveMember_5000" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5001" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodThirteenMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodThirteenMember_5002" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5001" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodThirteenMember_5002" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5003" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodFifteenMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodFifteenMember_5004" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5003" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodFifteenMember_5004" order="12.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5005" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtinstrumentRedemptionPeriodSeventeenMember" xlink:label="Locator_cop_DebtinstrumentRedemptionPeriodSeventeenMember_5006" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5005" xlink:to="Locator_cop_DebtinstrumentRedemptionPeriodSeventeenMember_5006" order="13.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5007" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodEighteenMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodEighteenMember_5008" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5007" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodEighteenMember_5008" order="14.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5009" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodTwentyMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodTwentyMember_5010" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5009" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodTwentyMember_5010" order="15.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5011" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodTwentyOneMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodTwentyOneMember_5012" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5011" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodTwentyOneMember_5012" order="16.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5013" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodTwentyTwoMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodTwentyTwoMember_5014" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5013" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodTwentyTwoMember_5014" order="17.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5015" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodNineteenMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodNineteenMember_5016" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5015" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodNineteenMember_5016" order="18.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5017" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodTwentysevenMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodTwentysevenMember_5018" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5017" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodTwentysevenMember_5018" order="19.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5019" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodTwentyNineMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodTwentyNineMember_5020" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5019" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodTwentyNineMember_5020" order="20.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5021" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodThirtyOneMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodThirtyOneMember_5022" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5021" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodThirtyOneMember_5022" order="21.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5023" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodFourteenMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodFourteenMember_5024" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5023" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodFourteenMember_5024" order="22.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5025" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DebtInstrumentRedemptionPeriodThirtyMember" xlink:label="Locator_cop_DebtInstrumentRedemptionPeriodThirtyMember_5026" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5025" xlink:to="Locator_cop_DebtInstrumentRedemptionPeriodThirtyMember_5026" order="23.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5027" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodThreeMember" xlink:label="Locator_us-gaap_DebtInstrumentRedemptionPeriodThreeMember_5028" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentRedemptionPeriodDomain_5027" xlink:to="Locator_us-gaap_DebtInstrumentRedemptionPeriodThreeMember_5028" order="24.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="Locator_us-gaap_DebtInstrumentTable_5029" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="Locator_us-gaap_LongtermDebtTypeAxis_5030" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DebtInstrumentTable_5029" xlink:to="Locator_us-gaap_LongtermDebtTypeAxis_5030" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="Locator_us-gaap_LongtermDebtTypeAxis_5031" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="Locator_us-gaap_LongtermDebtTypeDomain_5032" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_LongtermDebtTypeAxis_5031" xlink:to="Locator_us-gaap_LongtermDebtTypeDomain_5032" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="Locator_us-gaap_LongtermDebtTypeAxis_5033" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="Locator_us-gaap_LongtermDebtTypeDomain_5034" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_LongtermDebtTypeAxis_5033" xlink:to="Locator_us-gaap_LongtermDebtTypeDomain_5034" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="Locator_us-gaap_LongtermDebtTypeDomain_5035" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NotesPayableToBanksMember" xlink:label="Locator_us-gaap_NotesPayableToBanksMember_5036" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LongtermDebtTypeDomain_5035" xlink:to="Locator_us-gaap_NotesPayableToBanksMember_5036" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="Locator_us-gaap_LongtermDebtTypeDomain_5037" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnsecuredDebtMember" xlink:label="Locator_us-gaap_UnsecuredDebtMember_5038" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LongtermDebtTypeDomain_5037" xlink:to="Locator_us-gaap_UnsecuredDebtMember_5038" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="Locator_us-gaap_LongtermDebtTypeDomain_5039" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FloatingRateNotesMember" xlink:label="Locator_cop_FloatingRateNotesMember_5040" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LongtermDebtTypeDomain_5039" xlink:to="Locator_cop_FloatingRateNotesMember_5040" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="Locator_us-gaap_LongtermDebtTypeDomain_5041" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_VariableRateDebtBondsMember" xlink:label="Locator_cop_VariableRateDebtBondsMember_5042" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LongtermDebtTypeDomain_5041" xlink:to="Locator_cop_VariableRateDebtBondsMember_5042" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="Locator_us-gaap_LongtermDebtTypeDomain_5043" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CommercialPaperVariableRateMember" xlink:label="Locator_cop_CommercialPaperVariableRateMember_5044" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LongtermDebtTypeDomain_5043" xlink:to="Locator_cop_CommercialPaperVariableRateMember_5044" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="Locator_us-gaap_DebtInstrumentTable_5045" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="Locator_srt_RangeAxis_5046" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DebtInstrumentTable_5045" xlink:to="Locator_srt_RangeAxis_5046" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="Locator_srt_RangeAxis_5047" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_5048" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_RangeAxis_5047" xlink:to="Locator_srt_RangeMember_5048" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_5049" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember" xlink:label="Locator_srt_MinimumMember_5050" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RangeMember_5049" xlink:to="Locator_srt_MinimumMember_5050" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_5051" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember" xlink:label="Locator_srt_MaximumMember_5052" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RangeMember_5051" xlink:to="Locator_srt_MaximumMember_5052" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="Locator_us-gaap_DebtInstrumentLineItems_5053" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract" xlink:label="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract_5054" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentLineItems_5053" xlink:to="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract_5054" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract" xlink:label="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract_5055" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="Locator_us-gaap_DebtInstrumentFaceAmount_5056" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract_5055" xlink:to="Locator_us-gaap_DebtInstrumentFaceAmount_5056" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract" xlink:label="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract_5057" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalLeaseObligations" xlink:label="Locator_us-gaap_CapitalLeaseObligations_5058" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract_5057" xlink:to="Locator_us-gaap_CapitalLeaseObligations_5058" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract" xlink:label="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract_5059" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet" xlink:label="Locator_us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet_5060" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract_5059" xlink:to="Locator_us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet_5060" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract" xlink:label="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract_5061" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtAndCapitalLeaseObligations" xlink:label="Locator_us-gaap_DebtAndCapitalLeaseObligations_5062" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract_5061" xlink:to="Locator_us-gaap_DebtAndCapitalLeaseObligations_5062" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract" xlink:label="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract_5063" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtCurrent" xlink:label="Locator_us-gaap_DebtCurrent_5064" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract_5063" xlink:to="Locator_us-gaap_DebtCurrent_5064" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract" xlink:label="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract_5065" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligations_5066" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligationsAbstract_5065" xlink:to="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligations_5066" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="Locator_us-gaap_DebtInstrumentLineItems_5067" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="Locator_us-gaap_DebtInstrumentInterestRateStatedPercentage_5068" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DebtInstrumentLineItems_5067" xlink:to="Locator_us-gaap_DebtInstrumentInterestRateStatedPercentage_5068" order="2.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsCreditRiskDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="Locator_srt_RangeAxis_5241" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_5242" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_RangeAxis_5241" xlink:to="Locator_srt_RangeMember_5242" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_5243" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember" xlink:label="Locator_srt_MaximumMember_5244" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RangeMember_5243" xlink:to="Locator_srt_MaximumMember_5244" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems" xlink:label="Locator_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_5245" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable" xlink:label="Locator_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_5246" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_5245" xlink:to="Locator_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_5246" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable" xlink:label="Locator_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_5247" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CreditRiskAxis" xlink:label="Locator_cop_CreditRiskAxis_5248" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_5247" xlink:to="Locator_cop_CreditRiskAxis_5248" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CreditRiskAxis" xlink:label="Locator_cop_CreditRiskAxis_5249" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CreditRiskDomain" xlink:label="Locator_cop_CreditRiskDomain_5250" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_cop_CreditRiskAxis_5249" xlink:to="Locator_cop_CreditRiskDomain_5250" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CreditRiskAxis" xlink:label="Locator_cop_CreditRiskAxis_5251" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CreditRiskDomain" xlink:label="Locator_cop_CreditRiskDomain_5252" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_cop_CreditRiskAxis_5251" xlink:to="Locator_cop_CreditRiskDomain_5252" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CreditRiskDomain" xlink:label="Locator_cop_CreditRiskDomain_5253" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_InEventOfLoweredCreditRatingMember" xlink:label="Locator_cop_InEventOfLoweredCreditRatingMember_5254" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_CreditRiskDomain_5253" xlink:to="Locator_cop_InEventOfLoweredCreditRatingMember_5254" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CreditRiskDomain" xlink:label="Locator_cop_CreditRiskDomain_5255" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_IneventOfDownGradeBelowInvestmentGradeMember" xlink:label="Locator_cop_IneventOfDownGradeBelowInvestmentGradeMember_5256" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_CreditRiskDomain_5255" xlink:to="Locator_cop_IneventOfDownGradeBelowInvestmentGradeMember_5256" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems" xlink:label="Locator_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_5257" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeNetLiabilityPositionAggregateFairValue" xlink:label="Locator_us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_5258" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_5257" xlink:to="Locator_us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_5258" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems" xlink:label="Locator_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_5259" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CollateralAlreadyPostedAggregateFairValue" xlink:label="Locator_us-gaap_CollateralAlreadyPostedAggregateFairValue_5260" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_5259" xlink:to="Locator_us-gaap_CollateralAlreadyPostedAggregateFairValue_5260" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems" xlink:label="Locator_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_5261" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdditionalCollateralAggregateFairValue" xlink:label="Locator_us-gaap_AdditionalCollateralAggregateFairValue_5262" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_5261" xlink:to="Locator_us-gaap_AdditionalCollateralAggregateFairValue_5262" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_5263" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditDerivativeTerm1" xlink:label="Locator_us-gaap_CreditDerivativeTerm1_5264" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_5263" xlink:to="Locator_us-gaap_CreditDerivativeTerm1_5264" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_5265" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditDerivativeRecourseProvisions" xlink:label="Locator_us-gaap_CreditDerivativeRecourseProvisions_5266" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_5265" xlink:to="Locator_us-gaap_CreditDerivativeRecourseProvisions_5266" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_5267" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_5268" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_5267" xlink:to="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_5268" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_5269" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByAssetClassAxis" xlink:label="Locator_us-gaap_FairValueByAssetClassAxis_5270" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_5269" xlink:to="Locator_us-gaap_FairValueByAssetClassAxis_5270" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByAssetClassAxis" xlink:label="Locator_us-gaap_FairValueByAssetClassAxis_5271" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:label="Locator_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_5272" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FairValueByAssetClassAxis_5271" xlink:to="Locator_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_5272" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByAssetClassAxis" xlink:label="Locator_us-gaap_FairValueByAssetClassAxis_5273" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:label="Locator_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_5274" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_FairValueByAssetClassAxis_5273" xlink:to="Locator_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_5274" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:label="Locator_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_5275" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SecuritiesAssetsMember" xlink:label="Locator_us-gaap_SecuritiesAssetsMember_5276" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_5275" xlink:to="Locator_us-gaap_SecuritiesAssetsMember_5276" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:label="Locator_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_5277" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsReceivableMember" xlink:label="Locator_us-gaap_AccountsReceivableMember_5278" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_5277" xlink:to="Locator_us-gaap_AccountsReceivableMember_5278" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_5279" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="Locator_srt_RangeAxis_5280" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_5279" xlink:to="Locator_srt_RangeAxis_5280" order="2.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DisclosureFairValueMeasurementNonrecurringDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5321" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="Locator_us-gaap_FairValueInputsLevel1Member_5322" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5321" xlink:to="Locator_us-gaap_FairValueInputsLevel1Member_5322" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5323" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="Locator_us-gaap_FairValueInputsLevel2Member_5324" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5323" xlink:to="Locator_us-gaap_FairValueInputsLevel2Member_5324" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5325" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="Locator_us-gaap_FairValueInputsLevel3Member_5326" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5325" xlink:to="Locator_us-gaap_FairValueInputsLevel3Member_5326" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="Locator_us-gaap_FairValueByMeasurementBasisAxis_5327" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_5328" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FairValueByMeasurementBasisAxis_5327" xlink:to="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_5328" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_5329" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="Locator_us-gaap_PortionAtFairValueFairValueDisclosureMember_5330" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueDisclosureItemAmountsDomain_5329" xlink:to="Locator_us-gaap_PortionAtFairValueFairValueDisclosureMember_5330" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_5331" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5332" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_5331" xlink:to="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5332" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_5333" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5334" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_5333" xlink:to="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5334" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_5335" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5336" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_5335" xlink:to="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5336" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5337" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_5338" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5337" xlink:to="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_5338" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5339" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="Locator_us-gaap_FairValueByMeasurementFrequencyAxis_5340" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5339" xlink:to="Locator_us-gaap_FairValueByMeasurementFrequencyAxis_5340" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="Locator_us-gaap_FairValueByMeasurementFrequencyAxis_5341" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementFrequencyDomain_5342" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FairValueByMeasurementFrequencyAxis_5341" xlink:to="Locator_us-gaap_FairValueMeasurementFrequencyDomain_5342" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementFrequencyDomain_5343" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsNonrecurringMember" xlink:label="Locator_us-gaap_FairValueMeasurementsNonrecurringMember_5344" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueMeasurementFrequencyDomain_5343" xlink:to="Locator_us-gaap_FairValueMeasurementsNonrecurringMember_5344" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5345" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="Locator_us-gaap_FairValueByMeasurementBasisAxis_5346" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5345" xlink:to="Locator_us-gaap_FairValueByMeasurementBasisAxis_5346" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_5347" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="Locator_us-gaap_AssetsFairValueDisclosure_5348" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_5347" xlink:to="Locator_us-gaap_AssetsFairValueDisclosure_5348" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_5349" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsHeldForSaleLongLivedFairValueDisclosure" xlink:label="Locator_us-gaap_AssetsHeldForSaleLongLivedFairValueDisclosure_5350" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_5349" xlink:to="Locator_us-gaap_AssetsHeldForSaleLongLivedFairValueDisclosure_5350" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_5351" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf" xlink:label="Locator_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_5352" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_5351" xlink:to="Locator_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_5352" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_5353" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure" xlink:label="Locator_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure_5354" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_5353" xlink:to="Locator_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure_5354" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_5355" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CostEquityMethodInvestmentOtherThanTemporaryImpairment" xlink:label="Locator_cop_CostEquityMethodInvestmentOtherThanTemporaryImpairment_5356" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_5355" xlink:to="Locator_cop_CostEquityMethodInvestmentOtherThanTemporaryImpairment_5356" order="5.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/InvestmentInCenovusEnergyDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquitySecuritiesMember" xlink:label="Locator_us-gaap_EquitySecuritiesMember_5403" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockMember" xlink:label="Locator_us-gaap_CommonStockMember_5404" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_EquitySecuritiesMember_5403" xlink:to="Locator_us-gaap_CommonStockMember_5404" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_5405" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquitySecuritiesMember" xlink:label="Locator_us-gaap_EquitySecuritiesMember_5406" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_5405" xlink:to="Locator_us-gaap_EquitySecuritiesMember_5406" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_5407" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_5408" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_5407" xlink:to="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_5408" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_5409" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember" xlink:label="Locator_cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember_5410" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_5409" xlink:to="Locator_cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember_5410" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember" xlink:label="Locator_cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember_5411" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FosterCreekChristinaLakeFcclMember" xlink:label="Locator_cop_FosterCreekChristinaLakeFcclMember_5412" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember_5411" xlink:to="Locator_cop_FosterCreekChristinaLakeFcclMember_5412" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember" xlink:label="Locator_cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember_5413" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_WesternCanadaGasPropertiesMember" xlink:label="Locator_cop_WesternCanadaGasPropertiesMember_5414" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember_5413" xlink:to="Locator_cop_WesternCanadaGasPropertiesMember_5414" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="Locator_us-gaap_FinancialInstrumentAxis_5415" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_5416" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FinancialInstrumentAxis_5415" xlink:to="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_5416" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="Locator_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_5417" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="Locator_srt_EquityMethodInvesteeNameDomain_5418" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_5417" xlink:to="Locator_srt_EquityMethodInvesteeNameDomain_5418" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="Locator_srt_EquityMethodInvesteeNameDomain_5419" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CenovusEnergyMember" xlink:label="Locator_cop_CenovusEnergyMember_5420" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_EquityMethodInvesteeNameDomain_5419" xlink:to="Locator_cop_CenovusEnergyMember_5420" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5421" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_5422" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5421" xlink:to="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_5422" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_5423" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="Locator_us-gaap_FinancialInstrumentAxis_5424" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_5423" xlink:to="Locator_us-gaap_FinancialInstrumentAxis_5424" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_5425" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="Locator_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_5426" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_5425" xlink:to="Locator_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_5426" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_5427" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_5428" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_5427" xlink:to="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_5428" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5429" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationDescriptionAndTimingOfDisposal" xlink:label="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationDescriptionAndTimingOfDisposal_5430" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5429" xlink:to="Locator_us-gaap_DisposalGroupIncludingDiscontinuedOperationDescriptionAndTimingOfDisposal_5430" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5431" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="Locator_us-gaap_EquityMethodInvestmentOwnershipPercentage_5432" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5431" xlink:to="Locator_us-gaap_EquityMethodInvestmentOwnershipPercentage_5432" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5433" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SharesExchangeForAssetsHeldForSale" xlink:label="Locator_cop_SharesExchangeForAssetsHeldForSale_5434" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5433" xlink:to="Locator_cop_SharesExchangeForAssetsHeldForSale_5434" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5435" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_InvestmentOwnedCommonStockPercentOfIssuedAndOutstanding" xlink:label="Locator_cop_InvestmentOwnedCommonStockPercentOfIssuedAndOutstanding_5436" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5435" xlink:to="Locator_cop_InvestmentOwnedCommonStockPercentOfIssuedAndOutstanding_5436" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5437" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesEquitySecuritiesCurrent" xlink:label="Locator_us-gaap_AvailableForSaleSecuritiesEquitySecuritiesCurrent_5438" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5437" xlink:to="Locator_us-gaap_AvailableForSaleSecuritiesEquitySecuritiesCurrent_5438" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5439" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss" xlink:label="Locator_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_5440" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5439" xlink:to="Locator_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_5440" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5441" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_InvestmentInEquitySecurityFairValue" xlink:label="Locator_cop_InvestmentInEquitySecurityFairValue_5442" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5441" xlink:to="Locator_cop_InvestmentInEquitySecurityFairValue_5442" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5443" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis" xlink:label="Locator_us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis_5444" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5443" xlink:to="Locator_us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis_5444" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5445" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_InvestmentOwnedCommonStockPricePerShare" xlink:label="Locator_cop_InvestmentOwnedCommonStockPricePerShare_5446" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5445" xlink:to="Locator_cop_InvestmentOwnedCommonStockPricePerShare_5446" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5447" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnrealizedGainLossOnSecurities" xlink:label="Locator_us-gaap_UnrealizedGainLossOnSecurities_5448" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_5447" xlink:to="Locator_us-gaap_UnrealizedGainLossOnSecurities_5448" order="10.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsFXBalanceSheetDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:label="Locator_us-gaap_DerivativesFairValueLineItems_5483" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:label="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_5484" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DerivativesFairValueLineItems_5483" xlink:to="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_5484" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:label="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_5485" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="Locator_us-gaap_BalanceSheetLocationAxis_5486" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_5485" xlink:to="Locator_us-gaap_BalanceSheetLocationAxis_5486" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="Locator_us-gaap_BalanceSheetLocationAxis_5487" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_5488" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_BalanceSheetLocationAxis_5487" xlink:to="Locator_us-gaap_BalanceSheetLocationDomain_5488" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_5489" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherAccrualsMember" xlink:label="Locator_cop_OtherAccrualsMember_5490" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_5489" xlink:to="Locator_cop_OtherAccrualsMember_5490" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_5491" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherLiabilitiesMember" xlink:label="Locator_us-gaap_OtherLiabilitiesMember_5492" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_5491" xlink:to="Locator_us-gaap_OtherLiabilitiesMember_5492" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_5493" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember" xlink:label="Locator_us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_5494" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_5493" xlink:to="Locator_us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_5494" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:label="Locator_us-gaap_DerivativesFairValueLineItems_5495" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue" xlink:label="Locator_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue_5496" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativesFairValueLineItems_5495" xlink:to="Locator_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue_5496" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:label="Locator_us-gaap_DerivativesFairValueLineItems_5497" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue" xlink:label="Locator_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_5498" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativesFairValueLineItems_5497" xlink:to="Locator_us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_5498" order="2.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsFXGainLossDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems" xlink:label="Locator_us-gaap_DerivativeInstrumentsGainLossLineItems_5515" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnForeignCurrencyDerivativesRecordedInEarningsNet" xlink:label="Locator_us-gaap_GainLossOnForeignCurrencyDerivativesRecordedInEarningsNet_5516" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeInstrumentsGainLossLineItems_5515" xlink:to="Locator_us-gaap_GainLossOnForeignCurrencyDerivativesRecordedInEarningsNet_5516" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems" xlink:label="Locator_us-gaap_DerivativeInstrumentsGainLossLineItems_5517" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:label="Locator_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_5518" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DerivativeInstrumentsGainLossLineItems_5517" xlink:to="Locator_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_5518" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:label="Locator_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_5519" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="Locator_us-gaap_IncomeStatementLocationAxis_5520" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_5519" xlink:to="Locator_us-gaap_IncomeStatementLocationAxis_5520" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="Locator_us-gaap_IncomeStatementLocationAxis_5521" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="Locator_us-gaap_IncomeStatementLocationDomain_5522" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_IncomeStatementLocationAxis_5521" xlink:to="Locator_us-gaap_IncomeStatementLocationDomain_5522" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="Locator_us-gaap_IncomeStatementLocationDomain_5523" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignCurrencyGainLossMember" xlink:label="Locator_us-gaap_ForeignCurrencyGainLossMember_5524" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeStatementLocationDomain_5523" xlink:to="Locator_us-gaap_ForeignCurrencyGainLossMember_5524" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsFXNotionalDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="Locator_us-gaap_DerivativeInstrumentRiskAxis_5539" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_5540" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_DerivativeInstrumentRiskAxis_5539" xlink:to="Locator_us-gaap_DerivativeContractTypeDomain_5540" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_5541" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SellUsDollarBuyBritishPoundMember" xlink:label="Locator_cop_SellUsDollarBuyBritishPoundMember_5542" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeContractTypeDomain_5541" xlink:to="Locator_cop_SellUsDollarBuyBritishPoundMember_5542" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_5543" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BuyUsDollarSellOtherCurrenciesMember" xlink:label="Locator_cop_BuyUsDollarSellOtherCurrenciesMember_5544" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeContractTypeDomain_5543" xlink:to="Locator_cop_BuyUsDollarSellOtherCurrenciesMember_5544" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_5545" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SellBritishPoundBuyOtherCurrenciesMember" xlink:label="Locator_cop_SellBritishPoundBuyOtherCurrenciesMember_5546" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeContractTypeDomain_5545" xlink:to="Locator_cop_SellBritishPoundBuyOtherCurrenciesMember_5546" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_5547" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BuyBritishPoundSellEuroMember" xlink:label="Locator_cop_BuyBritishPoundSellEuroMember_5548" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeContractTypeDomain_5547" xlink:to="Locator_cop_BuyBritishPoundSellEuroMember_5548" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_5549" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SellBritishPoundBuyEuroMember" xlink:label="Locator_cop_SellBritishPoundBuyEuroMember_5550" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeContractTypeDomain_5549" xlink:to="Locator_cop_SellBritishPoundBuyEuroMember_5550" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_5551" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SellCanadianDollarBuyUsDollarMember" xlink:label="Locator_cop_SellCanadianDollarBuyUsDollarMember_5552" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeContractTypeDomain_5551" xlink:to="Locator_cop_SellCanadianDollarBuyUsDollarMember_5552" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TradingActivityGainsAndLossesLineItems" xlink:label="Locator_us-gaap_TradingActivityGainsAndLossesLineItems_5553" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeTable" xlink:label="Locator_us-gaap_DerivativeTable_5554" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_TradingActivityGainsAndLossesLineItems_5553" xlink:to="Locator_us-gaap_DerivativeTable_5554" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeTable" xlink:label="Locator_us-gaap_DerivativeTable_5555" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="Locator_us-gaap_DerivativeInstrumentRiskAxis_5556" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DerivativeTable_5555" xlink:to="Locator_us-gaap_DerivativeInstrumentRiskAxis_5556" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeTable" xlink:label="Locator_us-gaap_DerivativeTable_5557" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:label="Locator_us-gaap_HedgingDesignationAxis_5558" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DerivativeTable_5557" xlink:to="Locator_us-gaap_HedgingDesignationAxis_5558" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:label="Locator_us-gaap_HedgingDesignationAxis_5559" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="Locator_us-gaap_HedgingDesignationDomain_5560" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_HedgingDesignationAxis_5559" xlink:to="Locator_us-gaap_HedgingDesignationDomain_5560" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:label="Locator_us-gaap_HedgingDesignationAxis_5561" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="Locator_us-gaap_HedgingDesignationDomain_5562" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_HedgingDesignationAxis_5561" xlink:to="Locator_us-gaap_HedgingDesignationDomain_5562" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="Locator_us-gaap_HedgingDesignationDomain_5563" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NondesignatedMember" xlink:label="Locator_us-gaap_NondesignatedMember_5564" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_HedgingDesignationDomain_5563" xlink:to="Locator_us-gaap_NondesignatedMember_5564" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TradingActivityGainsAndLossesLineItems" xlink:label="Locator_us-gaap_TradingActivityGainsAndLossesLineItems_5565" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeNotionalAmount" xlink:label="Locator_us-gaap_DerivativeNotionalAmount_5566" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TradingActivityGainsAndLossesLineItems_5565" xlink:to="Locator_us-gaap_DerivativeNotionalAmount_5566" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/SegmentDisclosuresSalesByProductDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_5627" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5628" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_5627" xlink:to="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5628" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5629" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EnergyAxis" xlink:label="Locator_srt_EnergyAxis_5630" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5629" xlink:to="Locator_srt_EnergyAxis_5630" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EnergyAxis" xlink:label="Locator_srt_EnergyAxis_5631" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EnergyDomain" xlink:label="Locator_srt_EnergyDomain_5632" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_EnergyAxis_5631" xlink:to="Locator_srt_EnergyDomain_5632" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EnergyAxis" xlink:label="Locator_srt_EnergyAxis_5633" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EnergyDomain" xlink:label="Locator_srt_EnergyDomain_5634" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_srt_EnergyAxis_5633" xlink:to="Locator_srt_EnergyDomain_5634" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EnergyDomain" xlink:label="Locator_srt_EnergyDomain_5635" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CrudeOilMember" xlink:label="Locator_srt_CrudeOilMember_5636" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_EnergyDomain_5635" xlink:to="Locator_srt_CrudeOilMember_5636" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EnergyDomain" xlink:label="Locator_srt_EnergyDomain_5637" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherProductsMember" xlink:label="Locator_cop_OtherProductsMember_5638" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_EnergyDomain_5637" xlink:to="Locator_cop_OtherProductsMember_5638" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5639" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ReserveQuantitiesByTypeOfReserveAxis" xlink:label="Locator_srt_ReserveQuantitiesByTypeOfReserveAxis_5640" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5639" xlink:to="Locator_srt_ReserveQuantitiesByTypeOfReserveAxis_5640" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ReserveQuantitiesByTypeOfReserveAxis" xlink:label="Locator_srt_ReserveQuantitiesByTypeOfReserveAxis_5641" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_TypeOfReserveDomain" xlink:label="Locator_srt_TypeOfReserveDomain_5642" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ReserveQuantitiesByTypeOfReserveAxis_5641" xlink:to="Locator_srt_TypeOfReserveDomain_5642" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_TypeOfReserveDomain" xlink:label="Locator_srt_TypeOfReserveDomain_5643" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_NaturalGasReservesMember" xlink:label="Locator_srt_NaturalGasReservesMember_5644" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_TypeOfReserveDomain_5643" xlink:to="Locator_srt_NaturalGasReservesMember_5644" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_TypeOfReserveDomain" xlink:label="Locator_srt_TypeOfReserveDomain_5645" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_NaturalGasLiquidsReservesMember" xlink:label="Locator_srt_NaturalGasLiquidsReservesMember_5646" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_TypeOfReserveDomain_5645" xlink:to="Locator_srt_NaturalGasLiquidsReservesMember_5646" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5647" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="Locator_srt_ProductOrServiceAxis_5648" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5647" xlink:to="Locator_srt_ProductOrServiceAxis_5648" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="Locator_srt_ProductOrServiceAxis_5649" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="Locator_srt_ProductsAndServicesDomain_5650" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ProductOrServiceAxis_5649" xlink:to="Locator_srt_ProductsAndServicesDomain_5650" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="Locator_srt_ProductOrServiceAxis_5651" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="Locator_srt_ProductsAndServicesDomain_5652" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_srt_ProductOrServiceAxis_5651" xlink:to="Locator_srt_ProductsAndServicesDomain_5652" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="Locator_us-gaap_SegmentReportingInformationLineItems_5653" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="Locator_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_5654" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentReportingInformationLineItems_5653" xlink:to="Locator_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_5654" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/EmployeeBenefitPlansSeverancesDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:label="Locator_us-gaap_RestructuringPlanAxis_5759" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="Locator_us-gaap_RestructuringPlanDomain_5760" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RestructuringPlanAxis_5759" xlink:to="Locator_us-gaap_RestructuringPlanDomain_5760" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="Locator_us-gaap_RestructuringPlanDomain_5761" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ShortTermSupplementalUnemploymentBenefitsMember" xlink:label="Locator_cop_ShortTermSupplementalUnemploymentBenefitsMember_5762" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestructuringPlanDomain_5761" xlink:to="Locator_cop_ShortTermSupplementalUnemploymentBenefitsMember_5762" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:label="Locator_us-gaap_RestructuringCostAndReserveLineItems_5763" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:label="Locator_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_5764" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_RestructuringCostAndReserveLineItems_5763" xlink:to="Locator_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_5764" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:label="Locator_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_5765" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringCostAndReserveAxis" xlink:label="Locator_us-gaap_RestructuringCostAndReserveAxis_5766" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_5765" xlink:to="Locator_us-gaap_RestructuringCostAndReserveAxis_5766" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringCostAndReserveAxis" xlink:label="Locator_us-gaap_RestructuringCostAndReserveAxis_5767" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfRestructuringDomain" xlink:label="Locator_us-gaap_TypeOfRestructuringDomain_5768" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RestructuringCostAndReserveAxis_5767" xlink:to="Locator_us-gaap_TypeOfRestructuringDomain_5768" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringCostAndReserveAxis" xlink:label="Locator_us-gaap_RestructuringCostAndReserveAxis_5769" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfRestructuringDomain" xlink:label="Locator_us-gaap_TypeOfRestructuringDomain_5770" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_RestructuringCostAndReserveAxis_5769" xlink:to="Locator_us-gaap_TypeOfRestructuringDomain_5770" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfRestructuringDomain" xlink:label="Locator_us-gaap_TypeOfRestructuringDomain_5771" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeSeveranceMember" xlink:label="Locator_us-gaap_EmployeeSeveranceMember_5772" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TypeOfRestructuringDomain_5771" xlink:to="Locator_us-gaap_EmployeeSeveranceMember_5772" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:label="Locator_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_5773" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:label="Locator_us-gaap_RestructuringPlanAxis_5774" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_5773" xlink:to="Locator_us-gaap_RestructuringPlanAxis_5774" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:label="Locator_us-gaap_RestructuringCostAndReserveLineItems_5775" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringReserve" xlink:label="Locator_us-gaap_RestructuringReserve_5776" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestructuringCostAndReserveLineItems_5775" xlink:to="Locator_us-gaap_RestructuringReserve_5776" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:label="Locator_us-gaap_RestructuringCostAndReserveLineItems_5777" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInRestructuringReserve" xlink:label="Locator_us-gaap_IncreaseDecreaseInRestructuringReserve_5778" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestructuringCostAndReserveLineItems_5777" xlink:to="Locator_us-gaap_IncreaseDecreaseInRestructuringReserve_5778" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:label="Locator_us-gaap_RestructuringCostAndReserveLineItems_5779" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsForRestructuring" xlink:label="Locator_us-gaap_PaymentsForRestructuring_5780" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestructuringCostAndReserveLineItems_5779" xlink:to="Locator_us-gaap_PaymentsForRestructuring_5780" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:label="Locator_us-gaap_RestructuringCostAndReserveLineItems_5781" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation" xlink:label="Locator_us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation_5782" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestructuringCostAndReserveLineItems_5781" xlink:to="Locator_us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation_5782" order="4.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/SuspendedWellsExplorationExpenseDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_5799" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_AO" xlink:label="Locator_country_AO_5800" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_SegmentGeographicalDomain_5799" xlink:to="Locator_country_AO_5800" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_5801" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AsiaPacificMember1Member" xlink:label="Locator_cop_AsiaPacificMember1Member_5802" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_5801" xlink:to="Locator_cop_AsiaPacificMember1Member_5802" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_5803" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherInternationalSegmentMember" xlink:label="Locator_cop_OtherInternationalSegmentMember_5804" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_5803" xlink:to="Locator_cop_OtherInternationalSegmentMember_5804" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_5805" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AlaskaSegmentMember" xlink:label="Locator_cop_AlaskaSegmentMember_5806" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_5805" xlink:to="Locator_cop_AlaskaSegmentMember_5806" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_5807" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LowerFortyEightSegmentMember" xlink:label="Locator_cop_LowerFortyEightSegmentMember_5808" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_5807" xlink:to="Locator_cop_LowerFortyEightSegmentMember_5808" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_5809" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_5810" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_StatementBusinessSegmentsAxis_5809" xlink:to="Locator_us-gaap_SegmentDomain_5810" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_5811" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_5812" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ConsolidationItemsAxis_5811" xlink:to="Locator_srt_ConsolidationItemsDomain_5812" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_5813" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="Locator_us-gaap_OperatingSegmentsMember_5814" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidationItemsDomain_5813" xlink:to="Locator_us-gaap_OperatingSegmentsMember_5814" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="Locator_srt_StatementGeographicalAxis_5815" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_5816" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_StatementGeographicalAxis_5815" xlink:to="Locator_srt_SegmentGeographicalDomain_5816" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems_5817" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5818" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems_5817" xlink:to="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5818" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5819" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="Locator_srt_StatementGeographicalAxis_5820" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5819" xlink:to="Locator_srt_StatementGeographicalAxis_5820" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5821" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_5822" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5821" xlink:to="Locator_us-gaap_StatementBusinessSegmentsAxis_5822" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5823" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis" xlink:label="Locator_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_5824" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5823" xlink:to="Locator_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_5824" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis" xlink:label="Locator_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_5825" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_5826" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_5825" xlink:to="Locator_us-gaap_ProjectMember_5826" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_5827" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AthenaDrillingRigMember" xlink:label="Locator_cop_AthenaDrillingRigMember_5828" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_5827" xlink:to="Locator_cop_AthenaDrillingRigMember_5828" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_5829" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AlaskaNorthSlopeGasMember" xlink:label="Locator_cop_AlaskaNorthSlopeGasMember_5830" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_5829" xlink:to="Locator_cop_AlaskaNorthSlopeGasMember_5830" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_5831" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Picoplata1WellMember" xlink:label="Locator_cop_Picoplata1WellMember_5832" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_5831" xlink:to="Locator_cop_Picoplata1WellMember_5832" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_5833" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CentralLouisianaAustinChalkMember" xlink:label="Locator_cop_CentralLouisianaAustinChalkMember_5834" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_5833" xlink:to="Locator_cop_CentralLouisianaAustinChalkMember_5834" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5835" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_5836" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5835" xlink:to="Locator_srt_ConsolidationItemsAxis_5836" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems_5837" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ExplorationExpense" xlink:label="Locator_us-gaap_ExplorationExpense_5838" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems_5837" xlink:to="Locator_us-gaap_ExplorationExpense_5838" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/ImpairmentsNarrativesDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_5951" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AsiaPacificAndMiddleEastSegmentMember" xlink:label="Locator_cop_AsiaPacificAndMiddleEastSegmentMember_5952" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_5951" xlink:to="Locator_cop_AsiaPacificAndMiddleEastSegmentMember_5952" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_5953" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherInternationalSegmentMember" xlink:label="Locator_cop_OtherInternationalSegmentMember_5954" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_5953" xlink:to="Locator_cop_OtherInternationalSegmentMember_5954" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_5955" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AlaskaSegmentMember" xlink:label="Locator_cop_AlaskaSegmentMember_5956" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_5955" xlink:to="Locator_cop_AlaskaSegmentMember_5956" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_5957" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LowerFortyEightSegmentMember" xlink:label="Locator_cop_LowerFortyEightSegmentMember_5958" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_5957" xlink:to="Locator_cop_LowerFortyEightSegmentMember_5958" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_5959" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CanadaSegmentMember" xlink:label="Locator_cop_CanadaSegmentMember_5960" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_5959" xlink:to="Locator_cop_CanadaSegmentMember_5960" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_5961" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EuropeAndNorthAfricaSegmentMember" xlink:label="Locator_cop_EuropeAndNorthAfricaSegmentMember_5962" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_5961" xlink:to="Locator_cop_EuropeAndNorthAfricaSegmentMember_5962" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_5963" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_5964" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_StatementBusinessSegmentsAxis_5963" xlink:to="Locator_us-gaap_SegmentDomain_5964" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_5965" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_5966" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ConsolidationItemsAxis_5965" xlink:to="Locator_srt_ConsolidationItemsDomain_5966" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_5967" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="Locator_us-gaap_OperatingSegmentsMember_5968" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidationItemsDomain_5967" xlink:to="Locator_us-gaap_OperatingSegmentsMember_5968" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems_5969" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5970" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems_5969" xlink:to="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5970" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5971" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_5972" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5971" xlink:to="Locator_us-gaap_StatementBusinessSegmentsAxis_5972" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5973" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis" xlink:label="Locator_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_5974" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5973" xlink:to="Locator_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_5974" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis" xlink:label="Locator_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_5975" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_5976" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_5975" xlink:to="Locator_us-gaap_ProjectMember_5976" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_5977" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_NiobraraMember" xlink:label="Locator_cop_NiobraraMember_5978" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_5977" xlink:to="Locator_cop_NiobraraMember_5978" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_5979" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CentralLouisianaAustinChalkMember" xlink:label="Locator_cop_CentralLouisianaAustinChalkMember_5980" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_5979" xlink:to="Locator_cop_CentralLouisianaAustinChalkMember_5980" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_5981" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BarnettMember" xlink:label="Locator_cop_BarnettMember_5982" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_5981" xlink:to="Locator_cop_BarnettMember_5982" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_5983" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CertainProjectsInEuropeAndNorthAfricaMember" xlink:label="Locator_cop_CertainProjectsInEuropeAndNorthAfricaMember_5984" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_5983" xlink:to="Locator_cop_CertainProjectsInEuropeAndNorthAfricaMember_5984" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_5985" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_NonOperatedProducingPropertyMember" xlink:label="Locator_cop_NonOperatedProducingPropertyMember_5986" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_5985" xlink:to="Locator_cop_NonOperatedProducingPropertyMember_5986" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_5987" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CertainDevelopedPropertiesMember" xlink:label="Locator_cop_CertainDevelopedPropertiesMember_5988" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_5987" xlink:to="Locator_cop_CertainDevelopedPropertiesMember_5988" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_5989" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CancelledprojectMember" xlink:label="Locator_cop_CancelledprojectMember_5990" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_5989" xlink:to="Locator_cop_CancelledprojectMember_5990" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_5991" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AustraliaPacificLNGMember" xlink:label="Locator_cop_AustraliaPacificLNGMember_5992" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_5991" xlink:to="Locator_cop_AustraliaPacificLNGMember_5992" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_5993" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ShenandoahLeaseholdMember" xlink:label="Locator_cop_ShenandoahLeaseholdMember_5994" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_5993" xlink:to="Locator_cop_ShenandoahLeaseholdMember_5994" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_5995" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_MineralAssetsMember" xlink:label="Locator_cop_MineralAssetsMember_5996" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_5995" xlink:to="Locator_cop_MineralAssetsMember_5996" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProjectMember" xlink:label="Locator_us-gaap_ProjectMember_5997" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_WindRiverBasinMember" xlink:label="Locator_cop_WindRiverBasinMember_5998" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ProjectMember_5997" xlink:to="Locator_cop_WindRiverBasinMember_5998" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5999" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_6000" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_5999" xlink:to="Locator_srt_ConsolidationItemsAxis_6000" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems_6001" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetImpairmentCharges" xlink:label="Locator_us-gaap_AssetImpairmentCharges_6002" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems_6001" xlink:to="Locator_us-gaap_AssetImpairmentCharges_6002" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems" xlink:label="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems_6003" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ExplorationExpense" xlink:label="Locator_us-gaap_ExplorationExpense_6004" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems_6003" xlink:to="Locator_us-gaap_ExplorationExpense_6004" order="2.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/CashFlowInformationParentheticalDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems" xlink:label="Locator_us-gaap_DerivativeInstrumentsGainLossLineItems_6063" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:label="Locator_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_6064" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DerivativeInstrumentsGainLossLineItems_6063" xlink:to="Locator_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_6064" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:label="Locator_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_6065" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="Locator_us-gaap_DerivativeInstrumentRiskAxis_6066" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_6065" xlink:to="Locator_us-gaap_DerivativeInstrumentRiskAxis_6066" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="Locator_us-gaap_DerivativeInstrumentRiskAxis_6067" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_6068" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_DerivativeInstrumentRiskAxis_6067" xlink:to="Locator_us-gaap_DerivativeContractTypeDomain_6068" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="Locator_us-gaap_DerivativeContractTypeDomain_6069" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CurrencySwapMember" xlink:label="Locator_us-gaap_CurrencySwapMember_6070" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeContractTypeDomain_6069" xlink:to="Locator_us-gaap_CurrencySwapMember_6070" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems" xlink:label="Locator_us-gaap_DerivativeInstrumentsGainLossLineItems_6071" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PaymentsForForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments" xlink:label="Locator_cop_PaymentsForForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments_6072" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DerivativeInstrumentsGainLossLineItems_6071" xlink:to="Locator_cop_PaymentsForForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments_6072" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_6073" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="Locator_us-gaap_LossContingenciesTable_6074" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_LossContingenciesLineItems_6073" xlink:to="Locator_us-gaap_LossContingenciesTable_6074" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="Locator_us-gaap_LossContingenciesTable_6075" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseAxis" xlink:label="Locator_srt_LitigationCaseAxis_6076" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_LossContingenciesTable_6075" xlink:to="Locator_srt_LitigationCaseAxis_6076" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseAxis" xlink:label="Locator_srt_LitigationCaseAxis_6077" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="Locator_srt_LitigationCaseTypeDomain_6078" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_LitigationCaseAxis_6077" xlink:to="Locator_srt_LitigationCaseTypeDomain_6078" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="Locator_srt_LitigationCaseTypeDomain_6079" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ConocoPhillipsVsPetroleosDeVenezuelaSAMember" xlink:label="Locator_cop_ConocoPhillipsVsPetroleosDeVenezuelaSAMember_6080" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_LitigationCaseTypeDomain_6079" xlink:to="Locator_cop_ConocoPhillipsVsPetroleosDeVenezuelaSAMember_6080" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="Locator_srt_LitigationCaseTypeDomain_6081" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BurlingtonResourcesIncVsTheRepublicOfEcuadorMember" xlink:label="Locator_cop_BurlingtonResourcesIncVsTheRepublicOfEcuadorMember_6082" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_LitigationCaseTypeDomain_6081" xlink:to="Locator_cop_BurlingtonResourcesIncVsTheRepublicOfEcuadorMember_6082" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="Locator_us-gaap_LossContingenciesLineItems_6083" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromLegalSettlements" xlink:label="Locator_us-gaap_ProceedsFromLegalSettlements_6084" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LossContingenciesLineItems_6083" xlink:to="Locator_us-gaap_ProceedsFromLegalSettlements_6084" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/EmployeeBenefitPlansFairValuesOfPensionPlanAssetsParentheticalDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6261" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InsuranceContractRightsAndObligationsFairValueOptionMember" xlink:label="Locator_us-gaap_InsuranceContractRightsAndObligationsFairValueOptionMember_6262" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6261" xlink:to="Locator_us-gaap_InsuranceContractRightsAndObligationsFairValueOptionMember_6262" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_6263" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_PayablesToBrokerDealersAndClearingOrganizations" xlink:label="Locator_srt_PayablesToBrokerDealersAndClearingOrganizations_6264" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_6263" xlink:to="Locator_srt_PayablesToBrokerDealersAndClearingOrganizations_6264" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_6265" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FairValueOfParticipatingInterestInAnnuityContract" xlink:label="Locator_cop_FairValueOfParticipatingInterestInAnnuityContract_6266" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_6265" xlink:to="Locator_cop_FairValueOfParticipatingInterestInAnnuityContract_6266" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_6267" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6268" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_6267" xlink:to="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6268" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6269" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="Locator_us-gaap_FinancialInstrumentAxis_6270" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6269" xlink:to="Locator_us-gaap_FinancialInstrumentAxis_6270" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="Locator_us-gaap_FinancialInstrumentAxis_6271" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6272" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FinancialInstrumentAxis_6271" xlink:to="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6272" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/IncomeTaxesTextualsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="Locator_us-gaap_BusinessAcquisitionAxis_6391" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_6392" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_BusinessAcquisitionAxis_6391" xlink:to="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_6392" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_6393" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BpsKuparukAssetsMember" xlink:label="Locator_cop_BpsKuparukAssetsMember_6394" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_6393" xlink:to="Locator_cop_BpsKuparukAssetsMember_6394" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="Locator_us-gaap_BalanceSheetLocationAxis_6365" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_6366" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_BalanceSheetLocationAxis_6365" xlink:to="Locator_us-gaap_BalanceSheetLocationDomain_6366" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_6367" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherNoncurrentAssetsMember" xlink:label="Locator_us-gaap_OtherNoncurrentAssetsMember_6368" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_6367" xlink:to="Locator_us-gaap_OtherNoncurrentAssetsMember_6368" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_6369" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherNoncurrentLiabilitiesMember" xlink:label="Locator_us-gaap_OtherNoncurrentLiabilitiesMember_6370" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_6369" xlink:to="Locator_us-gaap_OtherNoncurrentLiabilitiesMember_6370" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementScenarioAxis" xlink:label="Locator_srt_StatementScenarioAxis_6371" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="Locator_srt_ScenarioUnspecifiedDomain_6372" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_StatementScenarioAxis_6371" xlink:to="Locator_srt_ScenarioUnspecifiedDomain_6372" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="Locator_srt_ScenarioUnspecifiedDomain_6373" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScenarioPlanMember" xlink:label="Locator_us-gaap_ScenarioPlanMember_6374" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ScenarioUnspecifiedDomain_6373" xlink:to="Locator_us-gaap_ScenarioPlanMember_6374" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6349" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationTable" xlink:label="Locator_us-gaap_IncomeTaxExaminationTable_6350" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6349" xlink:to="Locator_us-gaap_IncomeTaxExaminationTable_6350" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationTable" xlink:label="Locator_us-gaap_IncomeTaxExaminationTable_6353" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxAuthorityNameAxis" xlink:label="Locator_us-gaap_IncomeTaxAuthorityNameAxis_6354" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_IncomeTaxExaminationTable_6353" xlink:to="Locator_us-gaap_IncomeTaxAuthorityNameAxis_6354" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxAuthorityNameAxis" xlink:label="Locator_us-gaap_IncomeTaxAuthorityNameAxis_6375" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxAuthorityNameDomain" xlink:label="Locator_us-gaap_IncomeTaxAuthorityNameDomain_6376" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_IncomeTaxAuthorityNameAxis_6375" xlink:to="Locator_us-gaap_IncomeTaxAuthorityNameDomain_6376" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxAuthorityNameAxis" xlink:label="Locator_us-gaap_IncomeTaxAuthorityNameAxis_6455" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxAuthorityNameDomain" xlink:label="Locator_us-gaap_IncomeTaxAuthorityNameDomain_6456" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_IncomeTaxAuthorityNameAxis_6455" xlink:to="Locator_us-gaap_IncomeTaxAuthorityNameDomain_6456" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxAuthorityNameDomain" xlink:label="Locator_us-gaap_IncomeTaxAuthorityNameDomain_6377" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CanadaRevenueAgencyMember" xlink:label="Locator_us-gaap_CanadaRevenueAgencyMember_6378" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxAuthorityNameDomain_6377" xlink:to="Locator_us-gaap_CanadaRevenueAgencyMember_6378" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxAuthorityNameDomain" xlink:label="Locator_us-gaap_IncomeTaxAuthorityNameDomain_6379" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_HerMajestysRevenueAndCustomsHMRCMember" xlink:label="Locator_us-gaap_HerMajestysRevenueAndCustomsHMRCMember_6380" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxAuthorityNameDomain_6379" xlink:to="Locator_us-gaap_HerMajestysRevenueAndCustomsHMRCMember_6380" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxAuthorityNameDomain" xlink:label="Locator_us-gaap_IncomeTaxAuthorityNameDomain_6381" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CertainJurisdictionsOutsideOfDomesticMember" xlink:label="Locator_cop_CertainJurisdictionsOutsideOfDomesticMember_6382" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxAuthorityNameDomain_6381" xlink:to="Locator_cop_CertainJurisdictionsOutsideOfDomesticMember_6382" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxAuthorityNameDomain" xlink:label="Locator_us-gaap_IncomeTaxAuthorityNameDomain_6383" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AustraliaWestMember" xlink:label="Locator_cop_AustraliaWestMember_6384" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxAuthorityNameDomain_6383" xlink:to="Locator_cop_AustraliaWestMember_6384" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationTable" xlink:label="Locator_us-gaap_IncomeTaxExaminationTable_6355" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis" xlink:label="Locator_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_6356" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_IncomeTaxExaminationTable_6355" xlink:to="Locator_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_6356" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis" xlink:label="Locator_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_6385" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain" xlink:label="Locator_us-gaap_LongLivedAssetsHeldForSaleNameDomain_6386" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_6385" xlink:to="Locator_us-gaap_LongLivedAssetsHeldForSaleNameDomain_6386" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis" xlink:label="Locator_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_6457" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain" xlink:label="Locator_us-gaap_LongLivedAssetsHeldForSaleNameDomain_6458" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_6457" xlink:to="Locator_us-gaap_LongLivedAssetsHeldForSaleNameDomain_6458" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain" xlink:label="Locator_us-gaap_LongLivedAssetsHeldForSaleNameDomain_6387" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ClairFieldMember" xlink:label="Locator_cop_ClairFieldMember_6388" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LongLivedAssetsHeldForSaleNameDomain_6387" xlink:to="Locator_cop_ClairFieldMember_6388" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain" xlink:label="Locator_us-gaap_LongLivedAssetsHeldForSaleNameDomain_6389" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember" xlink:label="Locator_cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember_6390" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LongLivedAssetsHeldForSaleNameDomain_6389" xlink:to="Locator_cop_FosterCreekChristinaLakeAndWesternCanadaGasPropertiesMember_6390" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationTable" xlink:label="Locator_us-gaap_IncomeTaxExaminationTable_6357" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementScenarioAxis" xlink:label="Locator_srt_StatementScenarioAxis_6358" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_IncomeTaxExaminationTable_6357" xlink:to="Locator_srt_StatementScenarioAxis_6358" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationTable" xlink:label="Locator_us-gaap_IncomeTaxExaminationTable_6359" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="Locator_us-gaap_BalanceSheetLocationAxis_6360" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_IncomeTaxExaminationTable_6359" xlink:to="Locator_us-gaap_BalanceSheetLocationAxis_6360" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationTable" xlink:label="Locator_us-gaap_IncomeTaxExaminationTable_6361" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="Locator_us-gaap_BusinessAcquisitionAxis_6362" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_IncomeTaxExaminationTable_6361" xlink:to="Locator_us-gaap_BusinessAcquisitionAxis_6362" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationTable" xlink:label="Locator_us-gaap_IncomeTaxExaminationTable_6363" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesAxis" xlink:label="Locator_srt_ConsolidatedEntitiesAxis_6364" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_IncomeTaxExaminationTable_6363" xlink:to="Locator_srt_ConsolidatedEntitiesAxis_6364" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesAxis" xlink:label="Locator_srt_ConsolidatedEntitiesAxis_6395" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:label="Locator_srt_ConsolidatedEntitiesDomain_6396" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ConsolidatedEntitiesAxis_6395" xlink:to="Locator_srt_ConsolidatedEntitiesDomain_6396" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:label="Locator_srt_ConsolidatedEntitiesDomain_6397" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ParentCompanyMember" xlink:label="Locator_srt_ParentCompanyMember_6398" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidatedEntitiesDomain_6397" xlink:to="Locator_srt_ParentCompanyMember_6398" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6399" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredIncomeTaxAssetsNet" xlink:label="Locator_us-gaap_DeferredIncomeTaxAssetsNet_6400" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6399" xlink:to="Locator_us-gaap_DeferredIncomeTaxAssetsNet_6400" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6401" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:label="Locator_us-gaap_DeferredIncomeTaxLiabilitiesNet_6402" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6401" xlink:to="Locator_us-gaap_DeferredIncomeTaxLiabilitiesNet_6402" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6403" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount" xlink:label="Locator_us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_6404" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6403" xlink:to="Locator_us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_6404" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6405" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsNet" xlink:label="Locator_us-gaap_DeferredTaxAssetsNet_6406" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6405" xlink:to="Locator_us-gaap_DeferredTaxAssetsNet_6406" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6407" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign" xlink:label="Locator_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign_6408" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6407" xlink:to="Locator_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign_6408" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6409" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UndistributedEarningsOfForeignSubsidiaries" xlink:label="Locator_us-gaap_UndistributedEarningsOfForeignSubsidiaries_6410" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6409" xlink:to="Locator_us-gaap_UndistributedEarningsOfForeignSubsidiaries_6410" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6411" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EstimatedTaxPayableOnUndistributedUnremittedForeignIncome" xlink:label="Locator_cop_EstimatedTaxPayableOnUndistributedUnremittedForeignIncome_6412" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6411" xlink:to="Locator_cop_EstimatedTaxPayableOnUndistributedUnremittedForeignIncome_6412" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6413" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate" xlink:label="Locator_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_6414" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6413" xlink:to="Locator_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_6414" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6415" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued" xlink:label="Locator_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_6416" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6415" xlink:to="Locator_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_6416" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6417" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions" xlink:label="Locator_us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions_6418" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6417" xlink:to="Locator_us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions_6418" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6419" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnSaleOfOilAndGasProperty" xlink:label="Locator_us-gaap_GainLossOnSaleOfOilAndGasProperty_6420" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6419" xlink:to="Locator_us-gaap_GainLossOnSaleOfOilAndGasProperty_6420" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6421" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount" xlink:label="Locator_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount_6422" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6421" xlink:to="Locator_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount_6422" order="12.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6423" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_TaxCutsAndJobsActDecreaseIncreaseInDeferredTaxLiabilityDueToTransitionTax" xlink:label="Locator_cop_TaxCutsAndJobsActDecreaseIncreaseInDeferredTaxLiabilityDueToTransitionTax_6424" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6423" xlink:to="Locator_cop_TaxCutsAndJobsActDecreaseIncreaseInDeferredTaxLiabilityDueToTransitionTax_6424" order="13.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6425" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_TaxCutsAndJobsActOf2017AccountingProvisionalUndistributedAccumulatedEarningsOfForeignSubsidiary" xlink:label="Locator_cop_TaxCutsAndJobsActOf2017AccountingProvisionalUndistributedAccumulatedEarningsOfForeignSubsidiary_6426" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6425" xlink:to="Locator_cop_TaxCutsAndJobsActOf2017AccountingProvisionalUndistributedAccumulatedEarningsOfForeignSubsidiary_6426" order="14.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6427" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxReconciliationDispositionOfAssets" xlink:label="Locator_us-gaap_IncomeTaxReconciliationDispositionOfAssets_6428" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6427" xlink:to="Locator_us-gaap_IncomeTaxReconciliationDispositionOfAssets_6428" order="15.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6429" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets1" xlink:label="Locator_us-gaap_GainLossOnDispositionOfAssets1_6430" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6429" xlink:to="Locator_us-gaap_GainLossOnDispositionOfAssets1_6430" order="16.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6431" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:label="Locator_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_6432" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6431" xlink:to="Locator_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_6432" order="17.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6433" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate" xlink:label="Locator_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_6434" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6433" xlink:to="Locator_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_6434" order="18.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6435" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_IncomeTaxReconciliationDeductionsFairValueElection" xlink:label="Locator_cop_IncomeTaxReconciliationDeductionsFairValueElection_6436" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6435" xlink:to="Locator_cop_IncomeTaxReconciliationDeductionsFairValueElection_6436" order="19.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6437" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="Locator_us-gaap_IncomeTaxExpenseBenefit_6438" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6437" xlink:to="Locator_us-gaap_IncomeTaxExpenseBenefit_6438" order="20.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6439" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Worthlesssecuritydeduction" xlink:label="Locator_cop_Worthlesssecuritydeduction_6440" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6439" xlink:to="Locator_cop_Worthlesssecuritydeduction_6440" order="21.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6441" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_IncomeTaxReconciliationDispositionOfAssets2" xlink:label="Locator_cop_IncomeTaxReconciliationDispositionOfAssets2_6442" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6441" xlink:to="Locator_cop_IncomeTaxReconciliationDispositionOfAssets2_6442" order="22.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6443" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_MalaysiaDeepwaterTaxCreditsIncentive" xlink:label="Locator_cop_MalaysiaDeepwaterTaxCreditsIncentive_6444" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6443" xlink:to="Locator_cop_MalaysiaDeepwaterTaxCreditsIncentive_6444" order="23.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6445" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsCapitalLossCarryforwards" xlink:label="Locator_us-gaap_DeferredTaxAssetsCapitalLossCarryforwards_6446" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6445" xlink:to="Locator_us-gaap_DeferredTaxAssetsCapitalLossCarryforwards_6446" order="24.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6447" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_IncomeTaxExpenseBenefitAssociatedWithUSCapitalLoss" xlink:label="Locator_cop_IncomeTaxExpenseBenefitAssociatedWithUSCapitalLoss_6448" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6447" xlink:to="Locator_cop_IncomeTaxExpenseBenefitAssociatedWithUSCapitalLoss_6448" order="25.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6449" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInDeferredIncomeTaxes" xlink:label="Locator_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_6450" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6449" xlink:to="Locator_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_6450" order="26.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6451" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable" xlink:label="Locator_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_6452" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6451" xlink:to="Locator_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_6452" order="27.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExaminationLineItems" xlink:label="Locator_us-gaap_IncomeTaxExaminationLineItems_6453" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PercentSold" xlink:label="Locator_cop_PercentSold_6454" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_IncomeTaxExaminationLineItems_6453" xlink:to="Locator_cop_PercentSold_6454" order="28.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/InvestmentsLoansAndLTReceivablesFinancialInfoDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6523" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Revenues" xlink:label="Locator_us-gaap_Revenues_6524" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6523" xlink:to="Locator_us-gaap_Revenues_6524" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6525" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="Locator_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_6526" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6525" xlink:to="Locator_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_6526" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6527" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProfitLoss" xlink:label="Locator_us-gaap_ProfitLoss_6528" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6527" xlink:to="Locator_us-gaap_ProfitLoss_6528" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6529" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="Locator_us-gaap_AssetsCurrent_6530" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6529" xlink:to="Locator_us-gaap_AssetsCurrent_6530" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6531" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsNoncurrent" xlink:label="Locator_us-gaap_AssetsNoncurrent_6532" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6531" xlink:to="Locator_us-gaap_AssetsNoncurrent_6532" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6533" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="Locator_us-gaap_LiabilitiesCurrent_6534" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6533" xlink:to="Locator_us-gaap_LiabilitiesCurrent_6534" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6535" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesNoncurrent" xlink:label="Locator_us-gaap_LiabilitiesNoncurrent_6536" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6535" xlink:to="Locator_us-gaap_LiabilitiesNoncurrent_6536" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6537" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsTable_6538" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6537" xlink:to="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsTable_6538" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsTable_6539" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis" xlink:label="Locator_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_6540" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsTable_6539" xlink:to="Locator_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_6540" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis" xlink:label="Locator_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_6541" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain" xlink:label="Locator_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_6542" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_6541" xlink:to="Locator_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_6542" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis" xlink:label="Locator_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_6543" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain" xlink:label="Locator_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_6544" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_6543" xlink:to="Locator_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_6544" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain" xlink:label="Locator_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_6545" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AffiliatedCompaniesMember" xlink:label="Locator_cop_AffiliatedCompaniesMember_6546" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_6545" xlink:to="Locator_cop_AffiliatedCompaniesMember_6546" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/InvestmentsLoansAndLTReceivablesTextualsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="Locator_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_6615" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="Locator_srt_EquityMethodInvesteeNameDomain_6616" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_6615" xlink:to="Locator_srt_EquityMethodInvesteeNameDomain_6616" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="Locator_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_6709" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="Locator_srt_EquityMethodInvesteeNameDomain_6710" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_6709" xlink:to="Locator_srt_EquityMethodInvesteeNameDomain_6710" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="Locator_srt_EquityMethodInvesteeNameDomain_6617" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AustraliaPacificLNGMember" xlink:label="Locator_cop_AustraliaPacificLNGMember_6618" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_EquityMethodInvesteeNameDomain_6617" xlink:to="Locator_cop_AustraliaPacificLNGMember_6618" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="Locator_srt_EquityMethodInvesteeNameDomain_6619" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FosterCreekChristinaLakeFcclMember" xlink:label="Locator_cop_FosterCreekChristinaLakeFcclMember_6620" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_EquityMethodInvesteeNameDomain_6619" xlink:to="Locator_cop_FosterCreekChristinaLakeFcclMember_6620" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="Locator_srt_EquityMethodInvesteeNameDomain_6621" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_QatarLiquefiedGasCompanyLimitedThreeMember" xlink:label="Locator_cop_QatarLiquefiedGasCompanyLimitedThreeMember_6622" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_EquityMethodInvesteeNameDomain_6621" xlink:to="Locator_cop_QatarLiquefiedGasCompanyLimitedThreeMember_6622" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="Locator_srt_EquityMethodInvesteeNameDomain_6623" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_GoldenPassMember" xlink:label="Locator_cop_GoldenPassMember_6624" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_EquityMethodInvesteeNameDomain_6623" xlink:to="Locator_cop_GoldenPassMember_6624" order="4.0" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_LegalEntityAxis" xlink:label="Locator_dei_LegalEntityAxis_6625" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityDomain" xlink:label="Locator_dei_EntityDomain_6626" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_dei_LegalEntityAxis_6625" xlink:to="Locator_dei_EntityDomain_6626" order="1.0" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityDomain" xlink:label="Locator_dei_EntityDomain_6627" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OriginEnergyMember" xlink:label="Locator_cop_OriginEnergyMember_6628" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_dei_EntityDomain_6627" xlink:to="Locator_cop_OriginEnergyMember_6628" order="1.0" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityDomain" xlink:label="Locator_dei_EntityDomain_6629" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ChinaPetrochemicalCorporationSinopecMember" xlink:label="Locator_cop_ChinaPetrochemicalCorporationSinopecMember_6630" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_dei_EntityDomain_6629" xlink:to="Locator_cop_ChinaPetrochemicalCorporationSinopecMember_6630" order="2.0" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityDomain" xlink:label="Locator_dei_EntityDomain_6631" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_JapanBasedKansaiElectricMember" xlink:label="Locator_cop_JapanBasedKansaiElectricMember_6632" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_dei_EntityDomain_6631" xlink:to="Locator_cop_JapanBasedKansaiElectricMember_6632" order="3.0" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityDomain" xlink:label="Locator_dei_EntityDomain_6633" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CenovusEnergyIncMember" xlink:label="Locator_cop_CenovusEnergyIncMember_6634" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_dei_EntityDomain_6633" xlink:to="Locator_cop_CenovusEnergyIncMember_6634" order="4.0" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityDomain" xlink:label="Locator_dei_EntityDomain_6635" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_MitsuiandcompanyMember" xlink:label="Locator_cop_MitsuiandcompanyMember_6636" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_dei_EntityDomain_6635" xlink:to="Locator_cop_MitsuiandcompanyMember_6636" order="5.0" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityDomain" xlink:label="Locator_dei_EntityDomain_6637" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_QatarPetroleumMember" xlink:label="Locator_cop_QatarPetroleumMember_6638" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_dei_EntityDomain_6637" xlink:to="Locator_cop_QatarPetroleumMember_6638" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6583" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsTable_6584" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6583" xlink:to="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsTable_6584" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsTable_6607" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="Locator_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_6608" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsTable_6607" xlink:to="Locator_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_6608" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsTable_6609" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis" xlink:label="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis_6610" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsTable_6609" xlink:to="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis_6610" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis" xlink:label="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis_6639" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationDomain" xlink:label="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationDomain_6640" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis_6639" xlink:to="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationDomain_6640" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis" xlink:label="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis_6707" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationDomain" xlink:label="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationDomain_6708" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis_6707" xlink:to="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationDomain_6708" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationDomain" xlink:label="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationDomain_6641" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherAffiliatesMember" xlink:label="Locator_us-gaap_OtherAffiliatesMember_6642" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationDomain_6641" xlink:to="Locator_us-gaap_OtherAffiliatesMember_6642" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsTable_6611" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_LegalEntityAxis" xlink:label="Locator_dei_LegalEntityAxis_6612" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsTable_6611" xlink:to="Locator_dei_LegalEntityAxis_6612" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsTable_6613" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityAxis" xlink:label="Locator_us-gaap_LineOfCreditFacilityAxis_6614" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsTable_6613" xlink:to="Locator_us-gaap_LineOfCreditFacilityAxis_6614" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityAxis" xlink:label="Locator_us-gaap_LineOfCreditFacilityAxis_6643" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:label="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6644" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_LineOfCreditFacilityAxis_6643" xlink:to="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6644" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:label="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6645" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ExportImportBankOfUsMember" xlink:label="Locator_cop_ExportImportBankOfUsMember_6646" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6645" xlink:to="Locator_cop_ExportImportBankOfUsMember_6646" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:label="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6647" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ExportImportBankOfChinaMember" xlink:label="Locator_cop_ExportImportBankOfChinaMember_6648" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6647" xlink:to="Locator_cop_ExportImportBankOfChinaMember_6648" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:label="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6649" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_USPrivatePlacementBondMember" xlink:label="Locator_cop_USPrivatePlacementBondMember_6650" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6649" xlink:to="Locator_cop_USPrivatePlacementBondMember_6650" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:label="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6651" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AustralianAndInternationalCommercialBankSyndicateMember" xlink:label="Locator_cop_AustralianAndInternationalCommercialBankSyndicateMember_6652" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6651" xlink:to="Locator_cop_AustralianAndInternationalCommercialBankSyndicateMember_6652" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:label="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6653" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CreditAgenciesMember" xlink:label="Locator_cop_CreditAgenciesMember_6654" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6653" xlink:to="Locator_cop_CreditAgenciesMember_6654" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:label="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6655" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CommericalBanksMember" xlink:label="Locator_cop_CommericalBanksMember_6656" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6655" xlink:to="Locator_cop_CommericalBanksMember_6656" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:label="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6657" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ParentCompanyMember" xlink:label="Locator_srt_ParentCompanyMember_6658" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6657" xlink:to="Locator_srt_ParentCompanyMember_6658" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:label="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6659" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_UsprivateplacementbondtwomemberMember" xlink:label="Locator_cop_UsprivateplacementbondtwomemberMember_6660" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_LineOfCreditFacilityLenderDomain_6659" xlink:to="Locator_cop_UsprivateplacementbondtwomemberMember_6660" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6661" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="Locator_us-gaap_EquityMethodInvestmentOwnershipPercentage_6662" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6661" xlink:to="Locator_us-gaap_EquityMethodInvestmentOwnershipPercentage_6662" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6663" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees" xlink:label="Locator_us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees_6664" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6663" xlink:to="Locator_us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees_6664" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6665" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentDividendsOrDistributions" xlink:label="Locator_us-gaap_EquityMethodInvestmentDividendsOrDistributions_6666" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6665" xlink:to="Locator_us-gaap_EquityMethodInvestmentDividendsOrDistributions_6666" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6667" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentsFairValueDisclosure" xlink:label="Locator_us-gaap_EquityMethodInvestmentsFairValueDisclosure_6668" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6667" xlink:to="Locator_us-gaap_EquityMethodInvestmentsFairValueDisclosure_6668" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6669" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LettersOfCreditAbstract" xlink:label="Locator_cop_LettersOfCreditAbstract_6670" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6669" xlink:to="Locator_cop_LettersOfCreditAbstract_6670" order="5.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LettersOfCreditAbstract" xlink:label="Locator_cop_LettersOfCreditAbstract_6671" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="Locator_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_6672" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_LettersOfCreditAbstract_6671" xlink:to="Locator_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_6672" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LettersOfCreditAbstract" xlink:label="Locator_cop_LettersOfCreditAbstract_6673" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EarlyRepaymentOfSeniorDebt" xlink:label="Locator_us-gaap_EarlyRepaymentOfSeniorDebt_6674" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_LettersOfCreditAbstract_6673" xlink:to="Locator_us-gaap_EarlyRepaymentOfSeniorDebt_6674" order="2.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LettersOfCreditAbstract" xlink:label="Locator_cop_LettersOfCreditAbstract_6675" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:label="Locator_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_6676" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_LettersOfCreditAbstract_6675" xlink:to="Locator_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_6676" order="3.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LettersOfCreditAbstract" xlink:label="Locator_cop_LettersOfCreditAbstract_6677" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityDateOfFirstRequiredPayment1" xlink:label="Locator_us-gaap_LineOfCreditFacilityDateOfFirstRequiredPayment1_6678" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_LettersOfCreditAbstract_6677" xlink:to="Locator_us-gaap_LineOfCreditFacilityDateOfFirstRequiredPayment1_6678" order="4.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LettersOfCreditAbstract" xlink:label="Locator_cop_LettersOfCreditAbstract_6679" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityFrequencyOfPayments" xlink:label="Locator_us-gaap_LineOfCreditFacilityFrequencyOfPayments_6680" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_LettersOfCreditAbstract_6679" xlink:to="Locator_us-gaap_LineOfCreditFacilityFrequencyOfPayments_6680" order="5.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LettersOfCreditAbstract" xlink:label="Locator_cop_LettersOfCreditAbstract_6681" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityExpirationDate1" xlink:label="Locator_us-gaap_LineOfCreditFacilityExpirationDate1_6682" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_LettersOfCreditAbstract_6681" xlink:to="Locator_us-gaap_LineOfCreditFacilityExpirationDate1_6682" order="6.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LettersOfCreditAbstract" xlink:label="Locator_cop_LettersOfCreditAbstract_6683" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LineOfCreditFacilityDateOfFirstRequiredPaymentInterestOnly" xlink:label="Locator_cop_LineOfCreditFacilityDateOfFirstRequiredPaymentInterestOnly_6684" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_LettersOfCreditAbstract_6683" xlink:to="Locator_cop_LineOfCreditFacilityDateOfFirstRequiredPaymentInterestOnly_6684" order="7.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LettersOfCreditAbstract" xlink:label="Locator_cop_LettersOfCreditAbstract_6685" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Lineofcreditfacilitydateoffirstrequiredpaymentprincipalonly" xlink:label="Locator_cop_Lineofcreditfacilitydateoffirstrequiredpaymentprincipalonly_6686" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_LettersOfCreditAbstract_6685" xlink:to="Locator_cop_Lineofcreditfacilitydateoffirstrequiredpaymentprincipalonly_6686" order="8.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LettersOfCreditAbstract" xlink:label="Locator_cop_LettersOfCreditAbstract_6687" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BalanceOutstandingOnCreditFacility" xlink:label="Locator_cop_BalanceOutstandingOnCreditFacility_6688" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_LettersOfCreditAbstract_6687" xlink:to="Locator_cop_BalanceOutstandingOnCreditFacility_6688" order="9.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LettersOfCreditAbstract" xlink:label="Locator_cop_LettersOfCreditAbstract_6689" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Longtermdebtrefinancedamount" xlink:label="Locator_cop_Longtermdebtrefinancedamount_6690" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_LettersOfCreditAbstract_6689" xlink:to="Locator_cop_Longtermdebtrefinancedamount_6690" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6691" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment" xlink:label="Locator_us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment_6692" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6691" xlink:to="Locator_us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment_6692" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6693" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="Locator_us-gaap_EquityMethodInvestments_6694" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6693" xlink:to="Locator_us-gaap_EquityMethodInvestments_6694" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6695" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets" xlink:label="Locator_us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets_6696" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6695" xlink:to="Locator_us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets_6696" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6697" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity" xlink:label="Locator_us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity_6698" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6697" xlink:to="Locator_us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity_6698" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6699" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Amortizationofdifferencebetweencarryingamountandunderlyingequityunderequitymethodinvestment" xlink:label="Locator_cop_Amortizationofdifferencebetweencarryingamountandunderlyingequityunderequitymethodinvestment_6700" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6699" xlink:to="Locator_cop_Amortizationofdifferencebetweencarryingamountandunderlyingequityunderequitymethodinvestment_6700" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6701" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Equitymethodinvestmentdifferencebetweencarryingamountandunderlyingequityallocatedtoindividualexplorationandproductionlicenseareas" xlink:label="Locator_cop_Equitymethodinvestmentdifferencebetweencarryingamountandunderlyingequityallocatedtoindividualexplorationandproductionlicenseareas_6702" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6701" xlink:to="Locator_cop_Equitymethodinvestmentdifferencebetweencarryingamountandunderlyingequityallocatedtoindividualexplorationandproductionlicenseareas_6702" order="11.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6703" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DueFromRelatedParties" xlink:label="Locator_us-gaap_DueFromRelatedParties_6704" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6703" xlink:to="Locator_us-gaap_DueFromRelatedParties_6704" order="12.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6705" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="Locator_us-gaap_IncomeLossFromEquityMethodInvestments_6706" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6705" xlink:to="Locator_us-gaap_IncomeLossFromEquityMethodInvestments_6706" order="13.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/AquisitonsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_6793" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_AlaskaSegmentMember" xlink:label="Locator_cop_AlaskaSegmentMember_6794" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_6793" xlink:to="Locator_cop_AlaskaSegmentMember_6794" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_6795" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTable" xlink:label="Locator_us-gaap_CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTable_6796" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_6795" xlink:to="Locator_us-gaap_CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTable_6796" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTable" xlink:label="Locator_us-gaap_CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTable_6797" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="Locator_us-gaap_BusinessAcquisitionAxis_6798" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTable_6797" xlink:to="Locator_us-gaap_BusinessAcquisitionAxis_6798" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="Locator_us-gaap_BusinessAcquisitionAxis_6799" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_6800" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_BusinessAcquisitionAxis_6799" xlink:to="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_6800" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="Locator_us-gaap_BusinessAcquisitionAxis_6801" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_6802" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_BusinessAcquisitionAxis_6801" xlink:to="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_6802" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_6803" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_WnsassetsandpipelineMember" xlink:label="Locator_cop_WnsassetsandpipelineMember_6804" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_6803" xlink:to="Locator_cop_WnsassetsandpipelineMember_6804" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_6805" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_KuparukAssetsMember" xlink:label="Locator_cop_KuparukAssetsMember_6806" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_6805" xlink:to="Locator_cop_KuparukAssetsMember_6806" order="2.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_KuparukAssetsMember" xlink:label="Locator_cop_KuparukAssetsMember_6807" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_InterestInGreaterKuparukAreaMember" xlink:label="Locator_cop_InterestInGreaterKuparukAreaMember_6808" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_KuparukAssetsMember_6807" xlink:to="Locator_cop_InterestInGreaterKuparukAreaMember_6808" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_KuparukAssetsMember" xlink:label="Locator_cop_KuparukAssetsMember_6809" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_InterestInKuparukTransportationCoMember" xlink:label="Locator_cop_InterestInKuparukTransportationCoMember_6810" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_KuparukAssetsMember_6809" xlink:to="Locator_cop_InterestInKuparukTransportationCoMember_6810" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTable" xlink:label="Locator_us-gaap_CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTable_6811" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_6812" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTable_6811" xlink:to="Locator_us-gaap_StatementBusinessSegmentsAxis_6812" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_6813" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_6814" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_StatementBusinessSegmentsAxis_6813" xlink:to="Locator_us-gaap_SegmentDomain_6814" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTable" xlink:label="Locator_us-gaap_CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTable_6815" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_6816" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTable_6815" xlink:to="Locator_srt_ConsolidationItemsAxis_6816" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="Locator_srt_ConsolidationItemsAxis_6817" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_6818" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ConsolidationItemsAxis_6817" xlink:to="Locator_srt_ConsolidationItemsDomain_6818" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="Locator_srt_ConsolidationItemsDomain_6819" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="Locator_us-gaap_OperatingSegmentsMember_6820" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ConsolidationItemsDomain_6819" xlink:to="Locator_us-gaap_OperatingSegmentsMember_6820" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTable" xlink:label="Locator_us-gaap_CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTable_6821" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RegulatoryLiabilityAxis" xlink:label="Locator_us-gaap_RegulatoryLiabilityAxis_6822" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_CostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTable_6821" xlink:to="Locator_us-gaap_RegulatoryLiabilityAxis_6822" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RegulatoryLiabilityAxis" xlink:label="Locator_us-gaap_RegulatoryLiabilityAxis_6823" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RegulatoryLiabilityDomain" xlink:label="Locator_us-gaap_RegulatoryLiabilityDomain_6824" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RegulatoryLiabilityAxis_6823" xlink:to="Locator_us-gaap_RegulatoryLiabilityDomain_6824" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RegulatoryLiabilityDomain" xlink:label="Locator_us-gaap_RegulatoryLiabilityDomain_6825" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetRetirementObligationCostsMember" xlink:label="Locator_us-gaap_AssetRetirementObligationCostsMember_6826" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RegulatoryLiabilityDomain_6825" xlink:to="Locator_us-gaap_AssetRetirementObligationCostsMember_6826" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_6827" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CostsIncurredAcquisitionOfOilAndGasProperties" xlink:label="Locator_us-gaap_CostsIncurredAcquisitionOfOilAndGasProperties_6828" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_6827" xlink:to="Locator_us-gaap_CostsIncurredAcquisitionOfOilAndGasProperties_6828" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_6829" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PercentAcquired" xlink:label="Locator_cop_PercentAcquired_6830" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_6829" xlink:to="Locator_cop_PercentAcquired_6830" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_6831" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueOfAssetsAcquired" xlink:label="Locator_us-gaap_FairValueOfAssetsAcquired_6832" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_6831" xlink:to="Locator_us-gaap_FairValueOfAssetsAcquired_6832" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_6833" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_6834" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_6833" xlink:to="Locator_us-gaap_BusinessCombinationsAbstract_6834" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_6835" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="Locator_us-gaap_PropertyPlantAndEquipmentNet_6836" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationsAbstract_6835" xlink:to="Locator_us-gaap_PropertyPlantAndEquipmentNet_6836" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="Locator_us-gaap_PropertyPlantAndEquipmentNet_6789" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalizedCostsUnprovedProperties" xlink:label="Locator_us-gaap_CapitalizedCostsUnprovedProperties_6790" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PropertyPlantAndEquipmentNet_6789" xlink:to="Locator_us-gaap_CapitalizedCostsUnprovedProperties_6790" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="Locator_us-gaap_PropertyPlantAndEquipmentNet_6791" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalizedCostsProvedProperties" xlink:label="Locator_us-gaap_CapitalizedCostsProvedProperties_6792" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PropertyPlantAndEquipmentNet_6791" xlink:to="Locator_us-gaap_CapitalizedCostsProvedProperties_6792" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_6837" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NoncashOrPartNoncashAcquisitionInventoryAcquired1" xlink:label="Locator_us-gaap_NoncashOrPartNoncashAcquisitionInventoryAcquired1_6838" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationsAbstract_6837" xlink:to="Locator_us-gaap_NoncashOrPartNoncashAcquisitionInventoryAcquired1_6838" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_6839" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermAccountsNotesAndLoansReceivableNetNoncurrent" xlink:label="Locator_us-gaap_LongTermAccountsNotesAndLoansReceivableNetNoncurrent_6840" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationsAbstract_6839" xlink:to="Locator_us-gaap_LongTermAccountsNotesAndLoansReceivableNetNoncurrent_6840" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_6841" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetRetirementObligation" xlink:label="Locator_us-gaap_AssetRetirementObligation_6842" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationsAbstract_6841" xlink:to="Locator_us-gaap_AssetRetirementObligation_6842" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="Locator_us-gaap_BusinessCombinationsAbstract_6843" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_NetWorkingCapital" xlink:label="Locator_cop_NetWorkingCapital_6844" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessCombinationsAbstract_6843" xlink:to="Locator_cop_NetWorkingCapital_6844" order="5.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/EmployeeBenefitPlansChangeInBenefitObligationsParentheticalDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_6887" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_6888" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_6887" xlink:to="Locator_us-gaap_DomesticPlanMember_6888" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_6889" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_US" xlink:label="Locator_country_US_6890" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DomesticPlanMember_6889" xlink:to="Locator_country_US_6890" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_6891" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="Locator_us-gaap_ForeignPlanMember_6892" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_6891" xlink:to="Locator_us-gaap_ForeignPlanMember_6892" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_6893" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_6894" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_6893" xlink:to="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_6894" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_6895" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_PensionPlansDefinedBenefitMember_6896" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_6895" xlink:to="Locator_us-gaap_PensionPlansDefinedBenefitMember_6896" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_6897" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation" xlink:label="Locator_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_6898" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_6897" xlink:to="Locator_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_6898" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_6899" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6900" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_6899" xlink:to="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6900" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6901" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_6902" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6901" xlink:to="Locator_us-gaap_RetirementPlanTypeAxis_6902" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_6903" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_6904" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanTypeAxis_6903" xlink:to="Locator_us-gaap_RetirementPlanTypeDomain_6904" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6905" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_6906" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_6905" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationAxis_6906" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_6907" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_6908" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationAxis_6907" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationDomain_6908" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/CoverPage">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalUnitsByClassAxis" xlink:label="Locator_us-gaap_CapitalUnitsByClassAxis_7005" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalUnitClassDomain" xlink:label="Locator_us-gaap_CapitalUnitClassDomain_7006" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_CapitalUnitsByClassAxis_7005" xlink:to="Locator_us-gaap_CapitalUnitClassDomain_7006" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalUnitClassDomain" xlink:label="Locator_us-gaap_CapitalUnitClassDomain_7007" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TreasuryStockCommonMember" xlink:label="Locator_us-gaap_TreasuryStockCommonMember_7008" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_CapitalUnitClassDomain_7007" xlink:to="Locator_us-gaap_TreasuryStockCommonMember_7008" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalUnitClassDomain" xlink:label="Locator_us-gaap_CapitalUnitClassDomain_7009" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SevenpercentdebenturesduetwentytwentyninememberMember" xlink:label="Locator_cop_SevenpercentdebenturesduetwentytwentyninememberMember_7010" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_CapitalUnitClassDomain_7009" xlink:to="Locator_cop_SevenpercentdebenturesduetwentytwentyninememberMember_7010" order="2.0" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityListingsLineItems" xlink:label="Locator_dei_EntityListingsLineItems_7001" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityListingsTable" xlink:label="Locator_dei_EntityListingsTable_7002" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_dei_EntityListingsLineItems_7001" xlink:to="Locator_dei_EntityListingsTable_7002" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityListingsTable" xlink:label="Locator_dei_EntityListingsTable_7003" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalUnitsByClassAxis" xlink:label="Locator_us-gaap_CapitalUnitsByClassAxis_7004" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_dei_EntityListingsTable_7003" xlink:to="Locator_us-gaap_CapitalUnitsByClassAxis_7004" order="1.0" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityListingsLineItems" xlink:label="Locator_dei_EntityListingsLineItems_7011" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_Security12bTitle" xlink:label="Locator_dei_Security12bTitle_7012" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_dei_EntityListingsLineItems_7011" xlink:to="Locator_dei_Security12bTitle_7012" order="1.0" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityListingsLineItems" xlink:label="Locator_dei_EntityListingsLineItems_7013" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_TradingSymbol" xlink:label="Locator_dei_TradingSymbol_7014" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_dei_EntityListingsLineItems_7013" xlink:to="Locator_dei_TradingSymbol_7014" order="2.0" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityListingsLineItems" xlink:label="Locator_dei_EntityListingsLineItems_7015" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_SecurityExchangeName" xlink:label="Locator_dei_SecurityExchangeName_7016" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_dei_EntityListingsLineItems_7015" xlink:to="Locator_dei_SecurityExchangeName_7016" order="3.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/SalesAndOtherOperatingRevenueTransitionalArrangementsDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="Locator_us-gaap_TypeOfAdoptionMember_7183" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingStandardsUpdate201409Member" xlink:label="Locator_us-gaap_AccountingStandardsUpdate201409Member_7184" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TypeOfAdoptionMember_7183" xlink:to="Locator_us-gaap_AccountingStandardsUpdate201409Member_7184" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7185" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="Locator_us-gaap_TypeOfAdoptionMember_7186" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7185" xlink:to="Locator_us-gaap_TypeOfAdoptionMember_7186" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7187" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionDescription" xlink:label="Locator_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionDescription_7188" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7187" xlink:to="Locator_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionDescription_7188" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7189" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="Locator_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_7190" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7189" xlink:to="Locator_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_7190" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7191" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable" xlink:label="Locator_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_7192" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_StatementLineItems_7191" xlink:to="Locator_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_7192" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable" xlink:label="Locator_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_7193" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis" xlink:label="Locator_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis_7194" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_7193" xlink:to="Locator_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis_7194" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis" xlink:label="Locator_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis_7195" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain" xlink:label="Locator_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain_7196" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis_7195" xlink:to="Locator_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain_7196" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis" xlink:label="Locator_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis_7197" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain" xlink:label="Locator_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain_7198" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis_7197" xlink:to="Locator_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain_7198" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain" xlink:label="Locator_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain_7199" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member" xlink:label="Locator_us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member_7200" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain_7199" xlink:to="Locator_us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member_7200" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable" xlink:label="Locator_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_7201" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7202" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_7201" xlink:to="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7202" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7203" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerTimingOfSatisfactionOfPerformanceObligationAndPayment" xlink:label="Locator_us-gaap_ContractWithCustomerTimingOfSatisfactionOfPerformanceObligationAndPayment_7204" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7203" xlink:to="Locator_us-gaap_ContractWithCustomerTimingOfSatisfactionOfPerformanceObligationAndPayment_7204" order="2.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/SalesAndOtherOperatingRevenueRevenueFromContractsWithCustomersDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="Locator_us-gaap_TypeOfAdoptionMember_7243" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingStandardsUpdate201409Member" xlink:label="Locator_us-gaap_AccountingStandardsUpdate201409Member_7244" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TypeOfAdoptionMember_7243" xlink:to="Locator_us-gaap_AccountingStandardsUpdate201409Member_7244" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="Locator_srt_ProductsAndServicesDomain_7245" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PhysicalGasContractsMember" xlink:label="Locator_cop_PhysicalGasContractsMember_7246" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ProductsAndServicesDomain_7245" xlink:to="Locator_cop_PhysicalGasContractsMember_7246" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PhysicalGasContractsMember" xlink:label="Locator_cop_PhysicalGasContractsMember_7249" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CrudeOilProductLineMember" xlink:label="Locator_cop_CrudeOilProductLineMember_7250" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_PhysicalGasContractsMember_7249" xlink:to="Locator_cop_CrudeOilProductLineMember_7250" order="1.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PhysicalGasContractsMember" xlink:label="Locator_cop_PhysicalGasContractsMember_7251" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_NaturalGasProductLineMember" xlink:label="Locator_cop_NaturalGasProductLineMember_7252" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_PhysicalGasContractsMember_7251" xlink:to="Locator_cop_NaturalGasProductLineMember_7252" order="2.0" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PhysicalGasContractsMember" xlink:label="Locator_cop_PhysicalGasContractsMember_7253" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherProductsMember" xlink:label="Locator_cop_OtherProductsMember_7254" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_cop_PhysicalGasContractsMember_7253" xlink:to="Locator_cop_OtherProductsMember_7254" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="Locator_srt_ProductsAndServicesDomain_7247" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FinancialDerivativeContractsMember" xlink:label="Locator_cop_FinancialDerivativeContractsMember_7248" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ProductsAndServicesDomain_7247" xlink:to="Locator_cop_FinancialDerivativeContractsMember_7248" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_7255" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LowerFortyEightSegmentMember" xlink:label="Locator_cop_LowerFortyEightSegmentMember_7256" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_7255" xlink:to="Locator_cop_LowerFortyEightSegmentMember_7256" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_7257" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CanadaSegmentMember" xlink:label="Locator_cop_CanadaSegmentMember_7258" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_7257" xlink:to="Locator_cop_CanadaSegmentMember_7258" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_7259" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EuropeAndNorthAfricaSegmentMember" xlink:label="Locator_cop_EuropeAndNorthAfricaSegmentMember_7260" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_7259" xlink:to="Locator_cop_EuropeAndNorthAfricaSegmentMember_7260" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_7261" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EuropeMiddleEastAndNorthAfricaMember" xlink:label="Locator_cop_EuropeMiddleEastAndNorthAfricaMember_7262" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SegmentDomain_7261" xlink:to="Locator_cop_EuropeMiddleEastAndNorthAfricaMember_7262" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_7263" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain" xlink:label="Locator_us-gaap_SegmentDomain_7264" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_StatementBusinessSegmentsAxis_7263" xlink:to="Locator_us-gaap_SegmentDomain_7264" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7265" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="Locator_us-gaap_TypeOfAdoptionMember_7266" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7265" xlink:to="Locator_us-gaap_TypeOfAdoptionMember_7266" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="Locator_srt_ProductOrServiceAxis_7267" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="Locator_srt_ProductsAndServicesDomain_7268" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_ProductOrServiceAxis_7267" xlink:to="Locator_srt_ProductsAndServicesDomain_7268" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7231" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:label="Locator_us-gaap_DisaggregationOfRevenueTable_7232" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_StatementLineItems_7231" xlink:to="Locator_us-gaap_DisaggregationOfRevenueTable_7232" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:label="Locator_us-gaap_DisaggregationOfRevenueTable_7235" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7236" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DisaggregationOfRevenueTable_7235" xlink:to="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7236" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:label="Locator_us-gaap_DisaggregationOfRevenueTable_7237" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="Locator_us-gaap_StatementBusinessSegmentsAxis_7238" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DisaggregationOfRevenueTable_7237" xlink:to="Locator_us-gaap_StatementBusinessSegmentsAxis_7238" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:label="Locator_us-gaap_DisaggregationOfRevenueTable_7239" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="Locator_srt_ProductOrServiceAxis_7240" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DisaggregationOfRevenueTable_7239" xlink:to="Locator_srt_ProductOrServiceAxis_7240" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:label="Locator_us-gaap_DisaggregationOfRevenueTable_7241" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TradingActivityByTypeAxis" xlink:label="Locator_us-gaap_TradingActivityByTypeAxis_7242" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DisaggregationOfRevenueTable_7241" xlink:to="Locator_us-gaap_TradingActivityByTypeAxis_7242" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TradingActivityByTypeAxis" xlink:label="Locator_us-gaap_TradingActivityByTypeAxis_7269" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TradingActivityByTypeDomain" xlink:label="Locator_us-gaap_TradingActivityByTypeDomain_7270" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_TradingActivityByTypeAxis_7269" xlink:to="Locator_us-gaap_TradingActivityByTypeDomain_7270" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TradingActivityByTypeAxis" xlink:label="Locator_us-gaap_TradingActivityByTypeAxis_7277" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TradingActivityByTypeDomain" xlink:label="Locator_us-gaap_TradingActivityByTypeDomain_7278" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_TradingActivityByTypeAxis_7277" xlink:to="Locator_us-gaap_TradingActivityByTypeDomain_7278" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TradingActivityByTypeDomain" xlink:label="Locator_us-gaap_TradingActivityByTypeDomain_7271" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommodityMember" xlink:label="Locator_us-gaap_CommodityMember_7272" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TradingActivityByTypeDomain_7271" xlink:to="Locator_us-gaap_CommodityMember_7272" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7273" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="Locator_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_7274" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7273" xlink:to="Locator_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_7274" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7275" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenuePerformanceObligationDescriptionOfPaymentTerms" xlink:label="Locator_us-gaap_RevenuePerformanceObligationDescriptionOfPaymentTerms_7276" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7275" xlink:to="Locator_us-gaap_RevenuePerformanceObligationDescriptionOfPaymentTerms_7276" order="2.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/SalesAndOtherOperatingRevenueReceivablesAndContractLiabilitiesDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="Locator_us-gaap_TypeOfAdoptionMember_7347" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingStandardsUpdate201409Member" xlink:label="Locator_us-gaap_AccountingStandardsUpdate201409Member_7348" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TypeOfAdoptionMember_7347" xlink:to="Locator_us-gaap_AccountingStandardsUpdate201409Member_7348" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerDurationDomain" xlink:label="Locator_us-gaap_ContractWithCustomerDurationDomain_7349" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermContractWithCustomerMember" xlink:label="Locator_us-gaap_ShortTermContractWithCustomerMember_7350" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ContractWithCustomerDurationDomain_7349" xlink:to="Locator_us-gaap_ShortTermContractWithCustomerMember_7350" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerDurationDomain" xlink:label="Locator_us-gaap_ContractWithCustomerDurationDomain_7351" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermContractWithCustomerMember" xlink:label="Locator_us-gaap_LongTermContractWithCustomerMember_7352" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ContractWithCustomerDurationDomain_7351" xlink:to="Locator_us-gaap_LongTermContractWithCustomerMember_7352" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7353" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="Locator_us-gaap_TypeOfAdoptionMember_7354" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7353" xlink:to="Locator_us-gaap_TypeOfAdoptionMember_7354" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7355" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable" xlink:label="Locator_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_7356" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_StatementLineItems_7355" xlink:to="Locator_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_7356" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable" xlink:label="Locator_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_7357" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7358" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_7357" xlink:to="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7358" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable" xlink:label="Locator_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_7359" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerDurationAxis" xlink:label="Locator_us-gaap_ContractWithCustomerDurationAxis_7360" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_7359" xlink:to="Locator_us-gaap_ContractWithCustomerDurationAxis_7360" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerDurationAxis" xlink:label="Locator_us-gaap_ContractWithCustomerDurationAxis_7361" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerDurationDomain" xlink:label="Locator_us-gaap_ContractWithCustomerDurationDomain_7362" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_ContractWithCustomerDurationAxis_7361" xlink:to="Locator_us-gaap_ContractWithCustomerDurationDomain_7362" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerDurationAxis" xlink:label="Locator_us-gaap_ContractWithCustomerDurationAxis_7363" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerDurationDomain" xlink:label="Locator_us-gaap_ContractWithCustomerDurationDomain_7364" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_ContractWithCustomerDurationAxis_7363" xlink:to="Locator_us-gaap_ContractWithCustomerDurationDomain_7364" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7365" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsReceivableNet" xlink:label="Locator_us-gaap_AccountsReceivableNet_7366" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7365" xlink:to="Locator_us-gaap_AccountsReceivableNet_7366" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7367" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenuePerformanceObligationDescriptionOfPaymentTerms" xlink:label="Locator_us-gaap_RevenuePerformanceObligationDescriptionOfPaymentTerms_7368" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7367" xlink:to="Locator_us-gaap_RevenuePerformanceObligationDescriptionOfPaymentTerms_7368" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7369" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenuePerformanceObligationDescriptionOfTiming" xlink:label="Locator_us-gaap_RevenuePerformanceObligationDescriptionOfTiming_7370" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7369" xlink:to="Locator_us-gaap_RevenuePerformanceObligationDescriptionOfTiming_7370" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7371" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerTimingOfSatisfactionOfPerformanceObligationAndPayment" xlink:label="Locator_us-gaap_ContractWithCustomerTimingOfSatisfactionOfPerformanceObligationAndPayment_7372" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7371" xlink:to="Locator_us-gaap_ContractWithCustomerTimingOfSatisfactionOfPerformanceObligationAndPayment_7372" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7373" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerLiabilityAbstract" xlink:label="Locator_us-gaap_ContractWithCustomerLiabilityAbstract_7374" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7373" xlink:to="Locator_us-gaap_ContractWithCustomerLiabilityAbstract_7374" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerLiabilityAbstract" xlink:label="Locator_us-gaap_ContractWithCustomerLiabilityAbstract_7375" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerLiability" xlink:label="Locator_us-gaap_ContractWithCustomerLiability_7376" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ContractWithCustomerLiabilityAbstract_7375" xlink:to="Locator_us-gaap_ContractWithCustomerLiability_7376" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerLiabilityAbstract" xlink:label="Locator_us-gaap_ContractWithCustomerLiabilityAbstract_7377" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Contractwithcustomerliabilitycashreceived" xlink:label="Locator_cop_Contractwithcustomerliabilitycashreceived_7378" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ContractWithCustomerLiabilityAbstract_7377" xlink:to="Locator_cop_Contractwithcustomerliabilitycashreceived_7378" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7379" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ChangeInContractWithCustomerLiabilityAbstract" xlink:label="Locator_us-gaap_ChangeInContractWithCustomerLiabilityAbstract_7380" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7379" xlink:to="Locator_us-gaap_ChangeInContractWithCustomerLiabilityAbstract_7380" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ChangeInContractWithCustomerLiabilityAbstract" xlink:label="Locator_us-gaap_ChangeInContractWithCustomerLiabilityAbstract_7381" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized" xlink:label="Locator_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_7382" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ChangeInContractWithCustomerLiabilityAbstract_7381" xlink:to="Locator_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_7382" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7383" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionExplanation" xlink:label="Locator_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionExplanation_7384" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7383" xlink:to="Locator_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionExplanation_7384" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7385" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerLiabilityCurrent" xlink:label="Locator_us-gaap_ContractWithCustomerLiabilityCurrent_7386" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7385" xlink:to="Locator_us-gaap_ContractWithCustomerLiabilityCurrent_7386" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7387" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent" xlink:label="Locator_us-gaap_ContractWithCustomerLiabilityNoncurrent_7388" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7387" xlink:to="Locator_us-gaap_ContractWithCustomerLiabilityNoncurrent_7388" order="9.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/ChangeInAccountingPrinciplesDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="Locator_us-gaap_TypeOfAdoptionMember_7417" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="Locator_us-gaap_NewAccountingPronouncementMember_7418" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TypeOfAdoptionMember_7417" xlink:to="Locator_us-gaap_NewAccountingPronouncementMember_7418" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="Locator_us-gaap_NewAccountingPronouncementMember_7419" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingStandardsUpdate201802Member" xlink:label="Locator_us-gaap_AccountingStandardsUpdate201802Member_7420" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_NewAccountingPronouncementMember_7419" xlink:to="Locator_us-gaap_AccountingStandardsUpdate201802Member_7420" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="Locator_us-gaap_NewAccountingPronouncementMember_7421" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingStandardsUpdate201613Member" xlink:label="Locator_us-gaap_AccountingStandardsUpdate201613Member_7422" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_NewAccountingPronouncementMember_7421" xlink:to="Locator_us-gaap_AccountingStandardsUpdate201613Member_7422" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="Locator_us-gaap_NewAccountingPronouncementMember_7423" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingStandardsUpdate201602Member" xlink:label="Locator_us-gaap_AccountingStandardsUpdate201602Member_7424" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_NewAccountingPronouncementMember_7423" xlink:to="Locator_us-gaap_AccountingStandardsUpdate201602Member_7424" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7427" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7428" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7427" xlink:to="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7428" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7429" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7430" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7429" xlink:to="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7430" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7425" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="Locator_us-gaap_TypeOfAdoptionMember_7426" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7425" xlink:to="Locator_us-gaap_TypeOfAdoptionMember_7426" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7431" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementAxis" xlink:label="Locator_srt_RestatementAxis_7432" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7431" xlink:to="Locator_srt_RestatementAxis_7432" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementAxis" xlink:label="Locator_srt_RestatementAxis_7433" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementDomain" xlink:label="Locator_srt_RestatementDomain_7434" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_RestatementAxis_7433" xlink:to="Locator_srt_RestatementDomain_7434" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementDomain" xlink:label="Locator_srt_RestatementDomain_7435" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioPreviouslyReportedMember" xlink:label="Locator_srt_ScenarioPreviouslyReportedMember_7436" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RestatementDomain_7435" xlink:to="Locator_srt_ScenarioPreviouslyReportedMember_7436" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementDomain" xlink:label="Locator_srt_RestatementDomain_7437" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementAdjustmentMember" xlink:label="Locator_srt_RestatementAdjustmentMember_7438" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RestatementDomain_7437" xlink:to="Locator_srt_RestatementAdjustmentMember_7438" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7439" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="Locator_us-gaap_OperatingLeaseRightOfUseAsset_7440" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7439" xlink:to="Locator_us-gaap_OperatingLeaseRightOfUseAsset_7440" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7441" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="Locator_us-gaap_OperatingLeaseLiability_7442" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7441" xlink:to="Locator_us-gaap_OperatingLeaseLiability_7442" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7443" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="Locator_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_7444" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7443" xlink:to="Locator_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_7444" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7445" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="Locator_us-gaap_RetainedEarningsAccumulatedDeficit_7446" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7445" xlink:to="Locator_us-gaap_RetainedEarningsAccumulatedDeficit_7446" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7447" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleDescription" xlink:label="Locator_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleDescription_7448" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7447" xlink:to="Locator_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleDescription_7448" order="5.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/NonMineralLeasesBalanceSheetDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="Locator_us-gaap_TypeOfAdoptionMember_7525" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="Locator_us-gaap_NewAccountingPronouncementMember_7526" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TypeOfAdoptionMember_7525" xlink:to="Locator_us-gaap_NewAccountingPronouncementMember_7526" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="Locator_us-gaap_NewAccountingPronouncementMember_7527" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingStandardsUpdate201602Member" xlink:label="Locator_us-gaap_AccountingStandardsUpdate201602Member_7528" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_NewAccountingPronouncementMember_7527" xlink:to="Locator_us-gaap_AccountingStandardsUpdate201602Member_7528" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent" xlink:label="Locator_us-gaap_FinanceLeaseLiabilityNoncurrent_7529" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligations_7530" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FinanceLeaseLiabilityNoncurrent_7529" xlink:to="Locator_us-gaap_LongTermDebtAndCapitalLeaseObligations_7530" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="Locator_us-gaap_OperatingLeaseLiabilityNoncurrent_7531" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredCreditsAndOtherLiabilitiesNoncurrent" xlink:label="Locator_us-gaap_DeferredCreditsAndOtherLiabilitiesNoncurrent_7532" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_OperatingLeaseLiabilityNoncurrent_7531" xlink:to="Locator_us-gaap_DeferredCreditsAndOtherLiabilitiesNoncurrent_7532" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7535" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7536" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7535" xlink:to="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7536" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7533" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="Locator_us-gaap_TypeOfAdoptionMember_7534" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7533" xlink:to="Locator_us-gaap_TypeOfAdoptionMember_7534" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7537" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementAxis" xlink:label="Locator_srt_RestatementAxis_7538" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7537" xlink:to="Locator_srt_RestatementAxis_7538" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementAxis" xlink:label="Locator_srt_RestatementAxis_7539" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementDomain" xlink:label="Locator_srt_RestatementDomain_7540" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_RestatementAxis_7539" xlink:to="Locator_srt_RestatementDomain_7540" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementDomain" xlink:label="Locator_srt_RestatementDomain_7541" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioPreviouslyReportedMember" xlink:label="Locator_srt_ScenarioPreviouslyReportedMember_7542" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RestatementDomain_7541" xlink:to="Locator_srt_ScenarioPreviouslyReportedMember_7542" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementDomain" xlink:label="Locator_srt_RestatementDomain_7543" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementAdjustmentMember" xlink:label="Locator_srt_RestatementAdjustmentMember_7544" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RestatementDomain_7543" xlink:to="Locator_srt_RestatementAdjustmentMember_7544" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="Locator_us-gaap_OperatingLeaseRightOfUseAsset_7545" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="Locator_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_7546" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_OperatingLeaseRightOfUseAsset_7545" xlink:to="Locator_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_7546" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="Locator_us-gaap_OperatingLeaseRightOfUseAsset_7547" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="Locator_us-gaap_OtherAssetsNoncurrent_7548" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_OperatingLeaseRightOfUseAsset_7547" xlink:to="Locator_us-gaap_OtherAssetsNoncurrent_7548" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="Locator_us-gaap_OperatingLeaseLiability_7549" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList" xlink:label="Locator_us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList_7550" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_OperatingLeaseLiability_7549" xlink:to="Locator_us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList_7550" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7551" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="Locator_us-gaap_OperatingLeaseRightOfUseAsset_7552" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7551" xlink:to="Locator_us-gaap_OperatingLeaseRightOfUseAsset_7552" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7553" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="Locator_us-gaap_OperatingLeaseLiabilityCurrent_7554" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7553" xlink:to="Locator_us-gaap_OperatingLeaseLiabilityCurrent_7554" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="Locator_us-gaap_OperatingLeaseLiabilityCurrent_7555" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:label="Locator_us-gaap_OtherLiabilitiesCurrent_7556" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_OperatingLeaseLiabilityCurrent_7555" xlink:to="Locator_us-gaap_OtherLiabilitiesCurrent_7556" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7557" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="Locator_us-gaap_OperatingLeaseLiabilityNoncurrent_7558" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7557" xlink:to="Locator_us-gaap_OperatingLeaseLiabilityNoncurrent_7558" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7559" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7560" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_StatementLineItems_7559" xlink:to="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7560" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7561" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiability" xlink:label="Locator_us-gaap_FinanceLeaseLiability_7562" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7561" xlink:to="Locator_us-gaap_FinanceLeaseLiability_7562" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7563" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="Locator_us-gaap_OperatingLeaseLiability_7564" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7563" xlink:to="Locator_us-gaap_OperatingLeaseLiability_7564" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7565" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAsset" xlink:label="Locator_us-gaap_FinanceLeaseRightOfUseAsset_7566" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7565" xlink:to="Locator_us-gaap_FinanceLeaseRightOfUseAsset_7566" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAsset" xlink:label="Locator_us-gaap_FinanceLeaseRightOfUseAsset_7567" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="Locator_us-gaap_PropertyPlantAndEquipmentGross_7568" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FinanceLeaseRightOfUseAsset_7567" xlink:to="Locator_us-gaap_PropertyPlantAndEquipmentGross_7568" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAsset" xlink:label="Locator_us-gaap_FinanceLeaseRightOfUseAsset_7569" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="Locator_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_7570" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FinanceLeaseRightOfUseAsset_7569" xlink:to="Locator_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_7570" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAsset" xlink:label="Locator_us-gaap_FinanceLeaseRightOfUseAsset_7571" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="Locator_us-gaap_PropertyPlantAndEquipmentNet_7572" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FinanceLeaseRightOfUseAsset_7571" xlink:to="Locator_us-gaap_PropertyPlantAndEquipmentNet_7572" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7573" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityCurrent" xlink:label="Locator_us-gaap_FinanceLeaseLiabilityCurrent_7574" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7573" xlink:to="Locator_us-gaap_FinanceLeaseLiabilityCurrent_7574" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityCurrent" xlink:label="Locator_us-gaap_FinanceLeaseLiabilityCurrent_7575" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtCurrent" xlink:label="Locator_us-gaap_DebtCurrent_7576" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FinanceLeaseLiabilityCurrent_7575" xlink:to="Locator_us-gaap_DebtCurrent_7576" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7577" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent" xlink:label="Locator_us-gaap_FinanceLeaseLiabilityNoncurrent_7578" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7577" xlink:to="Locator_us-gaap_FinanceLeaseLiabilityNoncurrent_7578" order="3.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/NonMineralLeasesBalanceSheetLiabilitiesDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="Locator_us-gaap_BalanceSheetLocationAxis_7603" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_7604" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_BalanceSheetLocationAxis_7603" xlink:to="Locator_us-gaap_BalanceSheetLocationDomain_7604" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_7605" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ShortTermDebt1Member" xlink:label="Locator_cop_ShortTermDebt1Member_7606" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_7605" xlink:to="Locator_cop_ShortTermDebt1Member_7606" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_7607" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherAccruals1Member" xlink:label="Locator_cop_OtherAccruals1Member_7608" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_7607" xlink:to="Locator_cop_OtherAccruals1Member_7608" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_7609" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_LongTermDebtLocationMember" xlink:label="Locator_cop_LongTermDebtLocationMember_7610" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_7609" xlink:to="Locator_cop_LongTermDebtLocationMember_7610" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_7611" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_OtherLiabilitiesAndDeferredCreditsMember" xlink:label="Locator_cop_OtherLiabilitiesAndDeferredCreditsMember_7612" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_7611" xlink:to="Locator_cop_OtherLiabilitiesAndDeferredCreditsMember_7612" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7613" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="Locator_us-gaap_BalanceSheetLocationAxis_7614" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7613" xlink:to="Locator_us-gaap_BalanceSheetLocationAxis_7614" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7615" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7616" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_StatementLineItems_7615" xlink:to="Locator_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_7616" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7617" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiability" xlink:label="Locator_us-gaap_FinanceLeaseLiability_7618" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7617" xlink:to="Locator_us-gaap_FinanceLeaseLiability_7618" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7619" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="Locator_us-gaap_OperatingLeaseLiability_7620" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7619" xlink:to="Locator_us-gaap_OperatingLeaseLiability_7620" order="2.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/NonMineralLeasesEndNotesDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent" xlink:label="Locator_us-gaap_FinanceLeaseLiabilityNoncurrent_7743" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList" xlink:label="Locator_us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList_7744" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FinanceLeaseLiabilityNoncurrent_7743" xlink:to="Locator_us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList_7744" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="Locator_us-gaap_RelatedPartyDomain_7745" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CoVenturerMember" xlink:label="Locator_us-gaap_CoVenturerMember_7746" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RelatedPartyDomain_7745" xlink:to="Locator_us-gaap_CoVenturerMember_7746" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="Locator_us-gaap_BalanceSheetLocationAxis_7747" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_7748" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_BalanceSheetLocationAxis_7747" xlink:to="Locator_us-gaap_BalanceSheetLocationDomain_7748" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_7749" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentMember" xlink:label="Locator_us-gaap_PropertyPlantAndEquipmentMember_7750" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_7749" xlink:to="Locator_us-gaap_PropertyPlantAndEquipmentMember_7750" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_7751" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermDebtMember" xlink:label="Locator_us-gaap_ShortTermDebtMember_7752" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_7751" xlink:to="Locator_us-gaap_ShortTermDebtMember_7752" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_7753" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtMember" xlink:label="Locator_us-gaap_LongTermDebtMember_7754" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_7753" xlink:to="Locator_us-gaap_LongTermDebtMember_7754" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="Locator_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_7757" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="Locator_us-gaap_RelatedPartyDomain_7758" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_7757" xlink:to="Locator_us-gaap_RelatedPartyDomain_7758" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7761" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="Locator_us-gaap_PropertyPlantAndEquipmentNet_7762" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7761" xlink:to="Locator_us-gaap_PropertyPlantAndEquipmentNet_7762" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7763" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAsset" xlink:label="Locator_us-gaap_FinanceLeaseRightOfUseAsset_7764" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7763" xlink:to="Locator_us-gaap_FinanceLeaseRightOfUseAsset_7764" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAsset" xlink:label="Locator_us-gaap_FinanceLeaseRightOfUseAsset_7765" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList" xlink:label="Locator_us-gaap_FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_7766" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FinanceLeaseRightOfUseAsset_7765" xlink:to="Locator_us-gaap_FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_7766" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7767" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityCurrent" xlink:label="Locator_us-gaap_FinanceLeaseLiabilityCurrent_7768" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7767" xlink:to="Locator_us-gaap_FinanceLeaseLiabilityCurrent_7768" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityCurrent" xlink:label="Locator_us-gaap_FinanceLeaseLiabilityCurrent_7769" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList" xlink:label="Locator_us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList_7770" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FinanceLeaseLiabilityCurrent_7769" xlink:to="Locator_us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList_7770" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7771" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent" xlink:label="Locator_us-gaap_FinanceLeaseLiabilityNoncurrent_7772" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7771" xlink:to="Locator_us-gaap_FinanceLeaseLiabilityNoncurrent_7772" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7773" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermLeaseCommitmentAmount" xlink:label="Locator_us-gaap_ShortTermLeaseCommitmentAmount_7774" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7773" xlink:to="Locator_us-gaap_ShortTermLeaseCommitmentAmount_7774" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7775" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Shorttermleasecommitmentleasenotcommenced" xlink:label="Locator_cop_Shorttermleasecommitmentleasenotcommenced_7776" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7775" xlink:to="Locator_cop_Shorttermleasecommitmentleasenotcommenced_7776" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7777" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementTable" xlink:label="Locator_us-gaap_StatementTable_7778" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_StatementLineItems_7777" xlink:to="Locator_us-gaap_StatementTable_7778" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementTable" xlink:label="Locator_us-gaap_StatementTable_7755" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="Locator_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_7756" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_StatementTable_7755" xlink:to="Locator_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_7756" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementTable" xlink:label="Locator_us-gaap_StatementTable_7759" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="Locator_us-gaap_BalanceSheetLocationAxis_7760" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_StatementTable_7759" xlink:to="Locator_us-gaap_BalanceSheetLocationAxis_7760" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsFinancialInstrumentsFairValueDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7805" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialPaperMember" xlink:label="Locator_us-gaap_CommercialPaperMember_7806" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7805" xlink:to="Locator_us-gaap_CommercialPaperMember_7806" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7807" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_USGovernmentDebtSecuritiesMember" xlink:label="Locator_us-gaap_USGovernmentDebtSecuritiesMember_7808" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7807" xlink:to="Locator_us-gaap_USGovernmentDebtSecuritiesMember_7808" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7809" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember" xlink:label="Locator_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_7810" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7809" xlink:to="Locator_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_7810" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7811" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignGovernmentDebtMember" xlink:label="Locator_us-gaap_ForeignGovernmentDebtMember_7812" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7811" xlink:to="Locator_us-gaap_ForeignGovernmentDebtMember_7812" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7813" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetBackedSecuritiesMember" xlink:label="Locator_us-gaap_AssetBackedSecuritiesMember_7814" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7813" xlink:to="Locator_us-gaap_AssetBackedSecuritiesMember_7814" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7815" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CertificatesOfDepositMember" xlink:label="Locator_us-gaap_CertificatesOfDepositMember_7816" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7815" xlink:to="Locator_us-gaap_CertificatesOfDepositMember_7816" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7817" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:label="Locator_us-gaap_CorporateDebtSecuritiesMember_7818" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7817" xlink:to="Locator_us-gaap_CorporateDebtSecuritiesMember_7818" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="Locator_us-gaap_FinancialInstrumentAxis_7819" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7820" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FinancialInstrumentAxis_7819" xlink:to="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7820" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7821" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CashAndCashEquivalentsAtFairValue" xlink:label="Locator_cop_CashAndCashEquivalentsAtFairValue_7822" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7821" xlink:to="Locator_cop_CashAndCashEquivalentsAtFairValue_7822" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7823" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ShortTermInvestmentsAtFairValue" xlink:label="Locator_cop_ShortTermInvestmentsAtFairValue_7824" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7823" xlink:to="Locator_cop_ShortTermInvestmentsAtFairValue_7824" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7825" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_InvestmentsAndLongTermReceivableCarriedAtFairValue" xlink:label="Locator_cop_InvestmentsAndLongTermReceivableCarriedAtFairValue_7826" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7825" xlink:to="Locator_cop_InvestmentsAndLongTermReceivableCarriedAtFairValue_7826" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7827" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable" xlink:label="Locator_us-gaap_DebtSecuritiesAvailableForSaleTable_7828" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7827" xlink:to="Locator_us-gaap_DebtSecuritiesAvailableForSaleTable_7828" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable" xlink:label="Locator_us-gaap_DebtSecuritiesAvailableForSaleTable_7829" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentSecondaryCategorizationAxis" xlink:label="Locator_us-gaap_InvestmentSecondaryCategorizationAxis_7830" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DebtSecuritiesAvailableForSaleTable_7829" xlink:to="Locator_us-gaap_InvestmentSecondaryCategorizationAxis_7830" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentSecondaryCategorizationAxis" xlink:label="Locator_us-gaap_InvestmentSecondaryCategorizationAxis_7831" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsBySecondaryCategorizationDomain" xlink:label="Locator_us-gaap_InvestmentsBySecondaryCategorizationDomain_7832" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_InvestmentSecondaryCategorizationAxis_7831" xlink:to="Locator_us-gaap_InvestmentsBySecondaryCategorizationDomain_7832" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentSecondaryCategorizationAxis" xlink:label="Locator_us-gaap_InvestmentSecondaryCategorizationAxis_7833" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsBySecondaryCategorizationDomain" xlink:label="Locator_us-gaap_InvestmentsBySecondaryCategorizationDomain_7834" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_InvestmentSecondaryCategorizationAxis_7833" xlink:to="Locator_us-gaap_InvestmentsBySecondaryCategorizationDomain_7834" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsBySecondaryCategorizationDomain" xlink:label="Locator_us-gaap_InvestmentsBySecondaryCategorizationDomain_7835" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_RemainingMaturitiesWithinOneYearMember" xlink:label="Locator_cop_RemainingMaturitiesWithinOneYearMember_7836" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_InvestmentsBySecondaryCategorizationDomain_7835" xlink:to="Locator_cop_RemainingMaturitiesWithinOneYearMember_7836" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsBySecondaryCategorizationDomain" xlink:label="Locator_us-gaap_InvestmentsBySecondaryCategorizationDomain_7837" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_RemainingMaturitiesGreaterThanOneYearThroughFiveYearsMember" xlink:label="Locator_cop_RemainingMaturitiesGreaterThanOneYearThroughFiveYearsMember_7838" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_InvestmentsBySecondaryCategorizationDomain_7837" xlink:to="Locator_cop_RemainingMaturitiesGreaterThanOneYearThroughFiveYearsMember_7838" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsBySecondaryCategorizationDomain" xlink:label="Locator_us-gaap_InvestmentsBySecondaryCategorizationDomain_7839" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_RemainingMaturitiesGreaterThanOneYearMember" xlink:label="Locator_cop_RemainingMaturitiesGreaterThanOneYearMember_7840" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_InvestmentsBySecondaryCategorizationDomain_7839" xlink:to="Locator_cop_RemainingMaturitiesGreaterThanOneYearMember_7840" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable" xlink:label="Locator_us-gaap_DebtSecuritiesAvailableForSaleTable_7841" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="Locator_us-gaap_FinancialInstrumentAxis_7842" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DebtSecuritiesAvailableForSaleTable_7841" xlink:to="Locator_us-gaap_FinancialInstrumentAxis_7842" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsCostBasisToFairValueDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7885" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommercialPaperMember" xlink:label="Locator_us-gaap_CommercialPaperMember_7886" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7885" xlink:to="Locator_us-gaap_CommercialPaperMember_7886" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7887" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_USGovernmentDebtSecuritiesMember" xlink:label="Locator_us-gaap_USGovernmentDebtSecuritiesMember_7888" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7887" xlink:to="Locator_us-gaap_USGovernmentDebtSecuritiesMember_7888" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7889" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember" xlink:label="Locator_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_7890" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7889" xlink:to="Locator_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_7890" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7891" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignGovernmentDebtMember" xlink:label="Locator_us-gaap_ForeignGovernmentDebtMember_7892" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7891" xlink:to="Locator_us-gaap_ForeignGovernmentDebtMember_7892" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7893" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetBackedSecuritiesMember" xlink:label="Locator_us-gaap_AssetBackedSecuritiesMember_7894" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7893" xlink:to="Locator_us-gaap_AssetBackedSecuritiesMember_7894" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7895" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CertificatesOfDepositMember" xlink:label="Locator_us-gaap_CertificatesOfDepositMember_7896" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7895" xlink:to="Locator_us-gaap_CertificatesOfDepositMember_7896" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7897" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:label="Locator_us-gaap_CorporateDebtSecuritiesMember_7898" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7897" xlink:to="Locator_us-gaap_CorporateDebtSecuritiesMember_7898" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="Locator_us-gaap_FinancialInstrumentAxis_7899" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7900" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FinancialInstrumentAxis_7899" xlink:to="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7900" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7901" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable" xlink:label="Locator_us-gaap_DebtSecuritiesAvailableForSaleTable_7902" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7901" xlink:to="Locator_us-gaap_DebtSecuritiesAvailableForSaleTable_7902" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable" xlink:label="Locator_us-gaap_DebtSecuritiesAvailableForSaleTable_7903" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="Locator_us-gaap_FinancialInstrumentAxis_7904" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DebtSecuritiesAvailableForSaleTable_7903" xlink:to="Locator_us-gaap_FinancialInstrumentAxis_7904" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7905" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis" xlink:label="Locator_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_7906" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7905" xlink:to="Locator_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_7906" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7907" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesGrossUnrealizedGain" xlink:label="Locator_us-gaap_AvailableForSaleDebtSecuritiesGrossUnrealizedGain_7908" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7907" xlink:to="Locator_us-gaap_AvailableForSaleDebtSecuritiesGrossUnrealizedGain_7908" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7909" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentsFairValueDisclosure" xlink:label="Locator_us-gaap_InvestmentsFairValueDisclosure_7910" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7909" xlink:to="Locator_us-gaap_InvestmentsFairValueDisclosure_7910" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7911" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities" xlink:label="Locator_us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities_7912" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7911" xlink:to="Locator_us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities_7912" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7913" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesGrossUnrealizedLoss" xlink:label="Locator_us-gaap_AvailableForSaleDebtSecuritiesGrossUnrealizedLoss_7914" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7913" xlink:to="Locator_us-gaap_AvailableForSaleDebtSecuritiesGrossUnrealizedLoss_7914" order="3.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/DerivativeAndFinancialInstrumentsUnrealizedLossPositionDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7943" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:label="Locator_us-gaap_CorporateDebtSecuritiesMember_7944" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7943" xlink:to="Locator_us-gaap_CorporateDebtSecuritiesMember_7944" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="Locator_us-gaap_FinancialInstrumentAxis_7945" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7946" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FinancialInstrumentAxis_7945" xlink:to="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7946" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7947" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTable" xlink:label="Locator_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTable_7948" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7947" xlink:to="Locator_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTable_7948" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTable" xlink:label="Locator_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTable_7949" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="Locator_us-gaap_FinancialInstrumentAxis_7950" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTable_7949" xlink:to="Locator_us-gaap_FinancialInstrumentAxis_7950" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7951" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:label="Locator_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_7952" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7951" xlink:to="Locator_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_7952" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7953" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesGrossUnrealizedLoss" xlink:label="Locator_us-gaap_AvailableForSaleDebtSecuritiesGrossUnrealizedLoss_7954" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7953" xlink:to="Locator_us-gaap_AvailableForSaleDebtSecuritiesGrossUnrealizedLoss_7954" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7955" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months" xlink:label="Locator_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_7956" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_7955" xlink:to="Locator_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_7956" order="3.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/ConsolidatedStatementOfCashFlowsParenthetical">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="Locator_us-gaap_BalanceSheetLocationAxis_7969" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_7970" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_BalanceSheetLocationAxis_7969" xlink:to="Locator_us-gaap_BalanceSheetLocationDomain_7970" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_7971" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="Locator_us-gaap_OtherAssetsMember_7972" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_7971" xlink:to="Locator_us-gaap_OtherAssetsMember_7972" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="Locator_us-gaap_BalanceSheetLocationDomain_7973" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember" xlink:label="Locator_us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_7974" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BalanceSheetLocationDomain_7973" xlink:to="Locator_us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_7974" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7977" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementTable" xlink:label="Locator_us-gaap_StatementTable_7978" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_StatementLineItems_7977" xlink:to="Locator_us-gaap_StatementTable_7978" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementTable" xlink:label="Locator_us-gaap_StatementTable_7975" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="Locator_us-gaap_BalanceSheetLocationAxis_7976" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_StatementTable_7975" xlink:to="Locator_us-gaap_BalanceSheetLocationAxis_7976" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_7979" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedCash" xlink:label="Locator_us-gaap_RestrictedCash_7980" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_7979" xlink:to="Locator_us-gaap_RestrictedCash_7980" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/EmployeeBenefitPlansProjectedBenefitObligationDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanFundingStatusDomain" xlink:label="Locator_us-gaap_RetirementPlanFundingStatusDomain_7999" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnfundedPlanMember" xlink:label="Locator_us-gaap_UnfundedPlanMember_8000" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanFundingStatusDomain_7999" xlink:to="Locator_us-gaap_UnfundedPlanMember_8000" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8001" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_8002" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8001" xlink:to="Locator_us-gaap_DomesticPlanMember_8002" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_8003" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_US" xlink:label="Locator_country_US_8004" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DomesticPlanMember_8003" xlink:to="Locator_country_US_8004" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8005" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="Locator_us-gaap_ForeignPlanMember_8006" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8005" xlink:to="Locator_us-gaap_ForeignPlanMember_8006" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusDomain" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusDomain_8007" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_QualifiedPlanMember" xlink:label="Locator_us-gaap_QualifiedPlanMember_8008" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTaxStatusDomain_8007" xlink:to="Locator_us-gaap_QualifiedPlanMember_8008" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusDomain" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusDomain_8009" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NonqualifiedPlanMember" xlink:label="Locator_us-gaap_NonqualifiedPlanMember_8010" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTaxStatusDomain_8009" xlink:to="Locator_us-gaap_NonqualifiedPlanMember_8010" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8011" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation" xlink:label="Locator_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation_8012" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8011" xlink:to="Locator_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation_8012" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8013" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:label="Locator_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_8014" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8013" xlink:to="Locator_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_8014" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8015" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation" xlink:label="Locator_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_8016" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8015" xlink:to="Locator_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_8016" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8017" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8018" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8017" xlink:to="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8018" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8019" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusAxis" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusAxis_8020" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8019" xlink:to="Locator_us-gaap_RetirementPlanTaxStatusAxis_8020" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusAxis" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusAxis_8021" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusDomain" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusDomain_8022" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanTaxStatusAxis_8021" xlink:to="Locator_us-gaap_RetirementPlanTaxStatusDomain_8022" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8023" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanFundingStatusAxis" xlink:label="Locator_us-gaap_RetirementPlanFundingStatusAxis_8024" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8023" xlink:to="Locator_us-gaap_RetirementPlanFundingStatusAxis_8024" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanFundingStatusAxis" xlink:label="Locator_us-gaap_RetirementPlanFundingStatusAxis_8025" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanFundingStatusDomain" xlink:label="Locator_us-gaap_RetirementPlanFundingStatusDomain_8026" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanFundingStatusAxis_8025" xlink:to="Locator_us-gaap_RetirementPlanFundingStatusDomain_8026" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8027" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8028" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8027" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8028" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8029" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8030" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8029" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8030" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/EmployeeBenefitPlansBenefitCostNarrativeDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanNameDomain" xlink:label="Locator_us-gaap_RetirementPlanNameDomain_8077" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PrudentialBenefitObligationMember" xlink:label="Locator_cop_PrudentialBenefitObligationMember_8078" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanNameDomain_8077" xlink:to="Locator_cop_PrudentialBenefitObligationMember_8078" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8079" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_8080" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8079" xlink:to="Locator_us-gaap_DomesticPlanMember_8080" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_8081" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_US" xlink:label="Locator_country_US_8082" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DomesticPlanMember_8081" xlink:to="Locator_country_US_8082" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8083" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="Locator_us-gaap_ForeignPlanMember_8084" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8083" xlink:to="Locator_us-gaap_ForeignPlanMember_8084" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusDomain" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusDomain_8085" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_QualifiedPlanMember" xlink:label="Locator_us-gaap_QualifiedPlanMember_8086" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTaxStatusDomain_8085" xlink:to="Locator_us-gaap_QualifiedPlanMember_8086" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_8087" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_8088" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_8087" xlink:to="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_8088" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_8089" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_PensionPlansDefinedBenefitMember_8090" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_8089" xlink:to="Locator_us-gaap_PensionPlansDefinedBenefitMember_8090" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8091" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ChangeInDefinedBenefitObligation" xlink:label="Locator_cop_ChangeInDefinedBenefitObligation_8092" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8091" xlink:to="Locator_cop_ChangeInDefinedBenefitObligation_8092" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8093" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ChangeInDefinedBenefitAssets" xlink:label="Locator_cop_ChangeInDefinedBenefitAssets_8094" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8093" xlink:to="Locator_cop_ChangeInDefinedBenefitAssets_8094" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8095" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1" xlink:label="Locator_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_8096" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8095" xlink:to="Locator_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_8096" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8097" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PercentAmortizedOfUnamortizedBalanceForNetActuarialGainAndLosses" xlink:label="Locator_cop_PercentAmortizedOfUnamortizedBalanceForNetActuarialGainAndLosses_8098" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8097" xlink:to="Locator_cop_PercentAmortizedOfUnamortizedBalanceForNetActuarialGainAndLosses_8098" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8099" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear" xlink:label="Locator_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_8100" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8099" xlink:to="Locator_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_8100" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8101" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1" xlink:label="Locator_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_8102" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8101" xlink:to="Locator_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_8102" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8103" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate" xlink:label="Locator_us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_8104" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8103" xlink:to="Locator_us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_8104" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8105" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_8106" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8105" xlink:to="Locator_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_8106" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8107" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate" xlink:label="Locator_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_8108" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8107" xlink:to="Locator_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_8108" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8109" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8110" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8109" xlink:to="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8110" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8111" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusAxis" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusAxis_8112" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8111" xlink:to="Locator_us-gaap_RetirementPlanTaxStatusAxis_8112" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusAxis" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusAxis_8113" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusDomain" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusDomain_8114" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanTaxStatusAxis_8113" xlink:to="Locator_us-gaap_RetirementPlanTaxStatusDomain_8114" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8115" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanNameAxis" xlink:label="Locator_us-gaap_RetirementPlanNameAxis_8116" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8115" xlink:to="Locator_us-gaap_RetirementPlanNameAxis_8116" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanNameAxis" xlink:label="Locator_us-gaap_RetirementPlanNameAxis_8117" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanNameDomain" xlink:label="Locator_us-gaap_RetirementPlanNameDomain_8118" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanNameAxis_8117" xlink:to="Locator_us-gaap_RetirementPlanNameDomain_8118" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8119" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:label="Locator_us-gaap_RestructuringPlanAxis_8120" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8119" xlink:to="Locator_us-gaap_RestructuringPlanAxis_8120" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:label="Locator_us-gaap_RestructuringPlanAxis_8121" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="Locator_us-gaap_RestructuringPlanDomain_8122" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RestructuringPlanAxis_8121" xlink:to="Locator_us-gaap_RestructuringPlanDomain_8122" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="Locator_us-gaap_RestructuringPlanDomain_8123" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CopPreSixtyFiveRetireeMember" xlink:label="Locator_cop_CopPreSixtyFiveRetireeMember_8124" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestructuringPlanDomain_8123" xlink:to="Locator_cop_CopPreSixtyFiveRetireeMember_8124" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="Locator_us-gaap_RestructuringPlanDomain_8125" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_PostSixtyFiveRetireeMember" xlink:label="Locator_cop_PostSixtyFiveRetireeMember_8126" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RestructuringPlanDomain_8125" xlink:to="Locator_cop_PostSixtyFiveRetireeMember_8126" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8127" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_8128" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8127" xlink:to="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_8128" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_8129" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8130" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_8129" xlink:to="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8130" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8131" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CertainunitedkingdomassetsmemberMember" xlink:label="Locator_cop_CertainunitedkingdomassetsmemberMember_8132" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8131" xlink:to="Locator_cop_CertainunitedkingdomassetsmemberMember_8132" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8133" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_8134" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8133" xlink:to="Locator_us-gaap_RetirementPlanTypeAxis_8134" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_8135" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_8136" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanTypeAxis_8135" xlink:to="Locator_us-gaap_RetirementPlanTypeDomain_8136" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8137" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8138" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8137" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8138" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8139" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8140" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8139" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8140" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/EmployeeBenefitPlansFundingPolicyDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8191" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_US" xlink:label="Locator_country_US_8192" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8191" xlink:to="Locator_country_US_8192" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8193" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="Locator_us-gaap_ForeignPlanMember_8194" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8193" xlink:to="Locator_us-gaap_ForeignPlanMember_8194" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusDomain" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusDomain_8195" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_QualifiedPlanMember" xlink:label="Locator_us-gaap_QualifiedPlanMember_8196" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTaxStatusDomain_8195" xlink:to="Locator_us-gaap_QualifiedPlanMember_8196" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusDomain" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusDomain_8197" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NonqualifiedPlanMember" xlink:label="Locator_us-gaap_NonqualifiedPlanMember_8198" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTaxStatusDomain_8197" xlink:to="Locator_us-gaap_NonqualifiedPlanMember_8198" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_8199" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_8200" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_8199" xlink:to="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_8200" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_8201" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_PensionPlansDefinedBenefitMember_8202" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_8201" xlink:to="Locator_us-gaap_PensionPlansDefinedBenefitMember_8202" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8203" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear" xlink:label="Locator_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_8204" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8203" xlink:to="Locator_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_8204" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8205" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8206" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8205" xlink:to="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8206" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8207" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanFundingStatusAxis" xlink:label="Locator_us-gaap_RetirementPlanFundingStatusAxis_8208" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8207" xlink:to="Locator_us-gaap_RetirementPlanFundingStatusAxis_8208" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanFundingStatusAxis" xlink:label="Locator_us-gaap_RetirementPlanFundingStatusAxis_8209" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTaxStatusDomain" xlink:label="Locator_us-gaap_RetirementPlanTaxStatusDomain_8210" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanFundingStatusAxis_8209" xlink:to="Locator_us-gaap_RetirementPlanTaxStatusDomain_8210" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8211" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_8212" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8211" xlink:to="Locator_us-gaap_RetirementPlanTypeAxis_8212" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_8213" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_8214" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanTypeAxis_8213" xlink:to="Locator_us-gaap_RetirementPlanTypeDomain_8214" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8215" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8216" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8215" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8216" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8217" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8218" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8217" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8218" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/EmployeeBenefitPlansPlanAssetNarrativeDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8257" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="Locator_us-gaap_FairValueInputsLevel3Member_8258" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8257" xlink:to="Locator_us-gaap_FairValueInputsLevel3Member_8258" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8259" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InsuranceContractRightsAndObligationsFairValueOptionMember" xlink:label="Locator_us-gaap_InsuranceContractRightsAndObligationsFairValueOptionMember_8260" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8259" xlink:to="Locator_us-gaap_InsuranceContractRightsAndObligationsFairValueOptionMember_8260" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8261" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_8262" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8261" xlink:to="Locator_us-gaap_DomesticPlanMember_8262" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_8263" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_US" xlink:label="Locator_country_US_8264" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DomesticPlanMember_8263" xlink:to="Locator_country_US_8264" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_8265" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_PensionPlansDefinedBenefitMember_8266" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_8265" xlink:to="Locator_us-gaap_PensionPlansDefinedBenefitMember_8266" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8267" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage" xlink:label="Locator_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_8268" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8267" xlink:to="Locator_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_8268" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8269" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FairValueOfParticipatingInterestInAnnuityContract" xlink:label="Locator_cop_FairValueOfParticipatingInterestInAnnuityContract_8270" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8269" xlink:to="Locator_cop_FairValueOfParticipatingInterestInAnnuityContract_8270" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8271" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation" xlink:label="Locator_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_8272" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8271" xlink:to="Locator_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_8272" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8273" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets" xlink:label="Locator_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_8274" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8273" xlink:to="Locator_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_8274" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8275" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationPeriodIncreaseDecrease" xlink:label="Locator_us-gaap_DefinedBenefitPlanBenefitObligationPeriodIncreaseDecrease_8276" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8275" xlink:to="Locator_us-gaap_DefinedBenefitPlanBenefitObligationPeriodIncreaseDecrease_8276" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8277" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8278" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8277" xlink:to="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8278" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8279" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="Locator_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_8280" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8279" xlink:to="Locator_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_8280" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="Locator_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_8281" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_8282" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_8281" xlink:to="Locator_us-gaap_PlanAssetCategoriesDomain_8282" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_8283" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesMember" xlink:label="Locator_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_8284" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanAssetCategoriesDomain_8283" xlink:to="Locator_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_8284" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_8285" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDebtSecurityMember" xlink:label="Locator_us-gaap_DefinedBenefitPlanDebtSecurityMember_8286" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanAssetCategoriesDomain_8285" xlink:to="Locator_us-gaap_DefinedBenefitPlanDebtSecurityMember_8286" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_8287" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanRealEstateMember" xlink:label="Locator_us-gaap_DefinedBenefitPlanRealEstateMember_8288" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanAssetCategoriesDomain_8287" xlink:to="Locator_us-gaap_DefinedBenefitPlanRealEstateMember_8288" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="Locator_us-gaap_PlanAssetCategoriesDomain_8289" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherInvestmentsMember" xlink:label="Locator_us-gaap_OtherInvestmentsMember_8290" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanAssetCategoriesDomain_8289" xlink:to="Locator_us-gaap_OtherInvestmentsMember_8290" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8291" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="Locator_us-gaap_FinancialInstrumentAxis_8292" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8291" xlink:to="Locator_us-gaap_FinancialInstrumentAxis_8292" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="Locator_us-gaap_FinancialInstrumentAxis_8293" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8294" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FinancialInstrumentAxis_8293" xlink:to="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8294" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8295" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_8296" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8295" xlink:to="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_8296" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_8297" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8298" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_8297" xlink:to="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8298" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8299" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_8300" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8299" xlink:to="Locator_us-gaap_RetirementPlanTypeAxis_8300" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_8301" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_8302" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanTypeAxis_8301" xlink:to="Locator_us-gaap_RetirementPlanTypeDomain_8302" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8303" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8304" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8303" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8304" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8305" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8306" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8305" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8306" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/EmployeeBenefitPlansOtherPlanNarrativeDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8369" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_US" xlink:label="Locator_country_US_8370" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8369" xlink:to="Locator_country_US_8370" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8371" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="Locator_us-gaap_ForeignPlanMember_8372" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8371" xlink:to="Locator_us-gaap_ForeignPlanMember_8372" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_8373" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_8374" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_8373" xlink:to="Locator_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_8374" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="Locator_us-gaap_AwardTypeAxis_8375" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8376" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_AwardTypeAxis_8375" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8376" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8377" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_IncentiveStockOptionsMember" xlink:label="Locator_cop_IncentiveStockOptionsMember_8378" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8377" xlink:to="Locator_cop_IncentiveStockOptionsMember_8378" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8379" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent" xlink:label="Locator_us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent_8380" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8379" xlink:to="Locator_us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent_8380" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8381" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_NumberOfInvestmentFundsInWhichEmployeeCanContribute" xlink:label="Locator_cop_NumberOfInvestmentFundsInWhichEmployeeCanContribute_8382" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8381" xlink:to="Locator_cop_NumberOfInvestmentFundsInWhichEmployeeCanContribute_8382" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8383" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent" xlink:label="Locator_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent_8384" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8383" xlink:to="Locator_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent_8384" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8385" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch" xlink:label="Locator_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_8386" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8385" xlink:to="Locator_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_8386" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8387" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_EmployerMatchingDiscretionaryContributionPercent" xlink:label="Locator_cop_EmployerMatchingDiscretionaryContributionPercent_8388" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8387" xlink:to="Locator_cop_EmployerMatchingDiscretionaryContributionPercent_8388" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8389" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Definedcontributionplanemployersvestingperiod" xlink:label="Locator_cop_Definedcontributionplanemployersvestingperiod_8390" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8389" xlink:to="Locator_cop_Definedcontributionplanemployersvestingperiod_8390" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8391" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DefinedContributionPlanVestingPercent" xlink:label="Locator_cop_DefinedContributionPlanVestingPercent_8392" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8391" xlink:to="Locator_cop_DefinedContributionPlanVestingPercent_8392" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8393" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedContributionPlanCostRecognized" xlink:label="Locator_us-gaap_DefinedContributionPlanCostRecognized_8394" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8393" xlink:to="Locator_us-gaap_DefinedContributionPlanCostRecognized_8394" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8395" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualMaximumContractualTerm1" xlink:label="Locator_us-gaap_DeferredCompensationArrangementWithIndividualMaximumContractualTerm1_8396" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8395" xlink:to="Locator_us-gaap_DeferredCompensationArrangementWithIndividualMaximumContractualTerm1_8396" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8397" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_8398" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8397" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_8398" order="10.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8399" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8400" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8399" xlink:to="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8400" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8401" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="Locator_us-gaap_PlanNameAxis_8402" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8401" xlink:to="Locator_us-gaap_PlanNameAxis_8402" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="Locator_us-gaap_PlanNameAxis_8403" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="Locator_us-gaap_PlanNameDomain_8404" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_PlanNameAxis_8403" xlink:to="Locator_us-gaap_PlanNameDomain_8404" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="Locator_us-gaap_PlanNameDomain_8405" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_DefinedContributionPlanCompanyRetirementContributionMember" xlink:label="Locator_cop_DefinedContributionPlanCompanyRetirementContributionMember_8406" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanNameDomain_8405" xlink:to="Locator_cop_DefinedContributionPlanCompanyRetirementContributionMember_8406" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="Locator_us-gaap_PlanNameDomain_8407" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_TwentyFourteenOmnibusStockAndPerformanceIncentivePlanOfConocoPhillipsMember" xlink:label="Locator_cop_TwentyFourteenOmnibusStockAndPerformanceIncentivePlanOfConocoPhillipsMember_8408" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_PlanNameDomain_8407" xlink:to="Locator_cop_TwentyFourteenOmnibusStockAndPerformanceIncentivePlanOfConocoPhillipsMember_8408" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8409" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="Locator_us-gaap_AwardTypeAxis_8410" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8409" xlink:to="Locator_us-gaap_AwardTypeAxis_8410" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8411" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_8412" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8411" xlink:to="Locator_us-gaap_RetirementPlanTypeAxis_8412" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_8413" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_8414" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanTypeAxis_8413" xlink:to="Locator_us-gaap_RetirementPlanTypeDomain_8414" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8415" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8416" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8415" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8416" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8417" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8418" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8417" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8418" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/AccumulatedOtherComprehensiveIncomeTextualDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_8537" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8538" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_8537" xlink:to="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8538" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8539" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_UKSubsidiariesMember" xlink:label="Locator_cop_UKSubsidiariesMember_8540" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8539" xlink:to="Locator_cop_UKSubsidiariesMember_8540" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_8541" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_8542" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_StatementLineItems_8541" xlink:to="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_8542" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_8543" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_8544" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_8543" xlink:to="Locator_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_8544" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_8545" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:label="Locator_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_8546" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_8545" xlink:to="Locator_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_8546" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/SuspendedWellsChangesInWellCostsNarrativeDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_8559" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_AU" xlink:label="Locator_country_AU_8560" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_SegmentGeographicalDomain_8559" xlink:to="Locator_country_AU_8560" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="Locator_srt_StatementGeographicalAxis_8561" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_8562" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_StatementGeographicalAxis_8561" xlink:to="Locator_srt_SegmentGeographicalDomain_8562" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable" xlink:label="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_8563" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="Locator_srt_StatementGeographicalAxis_8564" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_8563" xlink:to="Locator_srt_StatementGeographicalAxis_8564" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_8565" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable" xlink:label="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_8566" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_StatementLineItems_8565" xlink:to="Locator_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_8566" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:label="Locator_us-gaap_StatementLineItems_8567" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalizedExploratoryWellCosts" xlink:label="Locator_us-gaap_CapitalizedExploratoryWellCosts_8568" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_StatementLineItems_8567" xlink:to="Locator_us-gaap_CapitalizedExploratoryWellCosts_8568" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/AcquisitionOfConchoResourcesIncNarrativeIntroDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="Locator_us-gaap_BusinessAcquisitionAxis_8599" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_8600" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_BusinessAcquisitionAxis_8599" xlink:to="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_8600" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_8601" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ConchoResourcesIncMember1Member" xlink:label="Locator_cop_ConchoResourcesIncMember1Member_8602" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_8601" xlink:to="Locator_cop_ConchoResourcesIncMember1Member_8602" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8603" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionDateOfAcquisitionAgreement1" xlink:label="Locator_us-gaap_BusinessAcquisitionDateOfAcquisitionAgreement1_8604" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8603" xlink:to="Locator_us-gaap_BusinessAcquisitionDateOfAcquisitionAgreement1_8604" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8605" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableShares" xlink:label="Locator_cop_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableShares_8606" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8605" xlink:to="Locator_cop_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableShares_8606" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8607" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BusinessCombinationPercentOfOutstandingSharesUponCompletion" xlink:label="Locator_cop_BusinessCombinationPercentOfOutstandingSharesUponCompletion_8608" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8607" xlink:to="Locator_cop_BusinessCombinationPercentOfOutstandingSharesUponCompletion_8608" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8609" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt" xlink:label="Locator_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_8610" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8609" xlink:to="Locator_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_8610" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8611" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtFairValue" xlink:label="Locator_us-gaap_LongTermDebtFairValue_8612" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8611" xlink:to="Locator_us-gaap_LongTermDebtFairValue_8612" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8613" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_SettledDebtExchangeOfferPercentOfHistoricalNotes" xlink:label="Locator_cop_SettledDebtExchangeOfferPercentOfHistoricalNotes_8614" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8613" xlink:to="Locator_cop_SettledDebtExchangeOfferPercentOfHistoricalNotes_8614" order="9.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8615" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="Locator_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8616" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8615" xlink:to="Locator_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8616" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="Locator_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8617" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="Locator_us-gaap_BusinessAcquisitionAxis_8618" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8617" xlink:to="Locator_us-gaap_BusinessAcquisitionAxis_8618" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="Locator_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8619" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="Locator_us-gaap_SubsequentEventTypeAxis_8620" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8619" xlink:to="Locator_us-gaap_SubsequentEventTypeAxis_8620" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="Locator_us-gaap_SubsequentEventTypeAxis_8621" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="Locator_us-gaap_SubsequentEventTypeDomain_8622" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_SubsequentEventTypeAxis_8621" xlink:to="Locator_us-gaap_SubsequentEventTypeDomain_8622" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="Locator_us-gaap_SubsequentEventTypeDomain_8623" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="Locator_us-gaap_SubsequentEventMember_8624" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SubsequentEventTypeDomain_8623" xlink:to="Locator_us-gaap_SubsequentEventMember_8624" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8625" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BusinessCombinationShareExchangeRatio" xlink:label="Locator_cop_BusinessCombinationShareExchangeRatio_8626" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8625" xlink:to="Locator_cop_BusinessCombinationShareExchangeRatio_8626" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8627" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued" xlink:label="Locator_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_8628" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8627" xlink:to="Locator_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_8628" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8629" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1" xlink:label="Locator_us-gaap_BusinessCombinationConsiderationTransferred1_8630" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8629" xlink:to="Locator_us-gaap_BusinessCombinationConsiderationTransferred1_8630" order="1.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/FairValueMeasurementInputsAndValuationTechniquesDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8657" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="Locator_us-gaap_FairValueInputsLevel3Member_8658" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8657" xlink:to="Locator_us-gaap_FairValueInputsLevel3Member_8658" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8659" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_WindRiverBasinMember" xlink:label="Locator_cop_WindRiverBasinMember_8660" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8659" xlink:to="Locator_cop_WindRiverBasinMember_8660" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8661" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_CentralBasinPlatformMember" xlink:label="Locator_cop_CentralBasinPlatformMember_8662" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8661" xlink:to="Locator_cop_CentralBasinPlatformMember_8662" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_8663" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_Lower48Member" xlink:label="Locator_cop_Lower48Member_8664" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_SegmentGeographicalDomain_8663" xlink:to="Locator_cop_Lower48Member_8664" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputTypeDomain" xlink:label="Locator_us-gaap_MeasurementInputTypeDomain_8665" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputDiscountRateMember" xlink:label="Locator_us-gaap_MeasurementInputDiscountRateMember_8666" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_MeasurementInputTypeDomain_8665" xlink:to="Locator_us-gaap_MeasurementInputDiscountRateMember_8666" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputTypeDomain" xlink:label="Locator_us-gaap_MeasurementInputTypeDomain_8667" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputCommodityFuturePriceMember" xlink:label="Locator_us-gaap_MeasurementInputCommodityFuturePriceMember_8668" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_MeasurementInputTypeDomain_8667" xlink:to="Locator_us-gaap_MeasurementInputCommodityFuturePriceMember_8668" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationTechniqueDomain" xlink:label="Locator_us-gaap_ValuationTechniqueDomain_8669" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationTechniqueDiscountedCashFlowMember" xlink:label="Locator_us-gaap_ValuationTechniqueDiscountedCashFlowMember_8670" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ValuationTechniqueDomain_8669" xlink:to="Locator_us-gaap_ValuationTechniqueDiscountedCashFlowMember_8670" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="Locator_srt_RangeAxis_8671" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_8672" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_RangeAxis_8671" xlink:to="Locator_srt_RangeMember_8672" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_8673" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember" xlink:label="Locator_srt_MinimumMember_8674" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RangeMember_8673" xlink:to="Locator_srt_MinimumMember_8674" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_8675" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember" xlink:label="Locator_srt_MaximumMember_8676" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RangeMember_8675" xlink:to="Locator_srt_MaximumMember_8676" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:label="Locator_srt_RangeMember_8677" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_WeightedAverageMember" xlink:label="Locator_srt_WeightedAverageMember_8678" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_RangeMember_8677" xlink:to="Locator_srt_WeightedAverageMember_8678" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="Locator_us-gaap_FinancialInstrumentAxis_8679" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8680" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FinancialInstrumentAxis_8679" xlink:to="Locator_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8680" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_8681" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8682" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_8681" xlink:to="Locator_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8682" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="Locator_us-gaap_FairValueByMeasurementFrequencyAxis_8683" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementFrequencyDomain_8684" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_FairValueByMeasurementFrequencyAxis_8683" xlink:to="Locator_us-gaap_FairValueMeasurementFrequencyDomain_8684" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="Locator_us-gaap_FairValueMeasurementFrequencyDomain_8685" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsNonrecurringMember" xlink:label="Locator_us-gaap_FairValueMeasurementsNonrecurringMember_8686" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueMeasurementFrequencyDomain_8685" xlink:to="Locator_us-gaap_FairValueMeasurementsNonrecurringMember_8686" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_8687" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8688" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_8687" xlink:to="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8688" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8689" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_8690" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8689" xlink:to="Locator_us-gaap_FairValueByFairValueHierarchyLevelAxis_8690" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8691" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:label="Locator_srt_RangeAxis_8692" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8691" xlink:to="Locator_srt_RangeAxis_8692" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8693" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputTypeAxis" xlink:label="Locator_us-gaap_MeasurementInputTypeAxis_8694" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8693" xlink:to="Locator_us-gaap_MeasurementInputTypeAxis_8694" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputTypeAxis" xlink:label="Locator_us-gaap_MeasurementInputTypeAxis_8695" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputTypeDomain" xlink:label="Locator_us-gaap_MeasurementInputTypeDomain_8696" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_MeasurementInputTypeAxis_8695" xlink:to="Locator_us-gaap_MeasurementInputTypeDomain_8696" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputTypeAxis" xlink:label="Locator_us-gaap_MeasurementInputTypeAxis_8697" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputTypeDomain" xlink:label="Locator_us-gaap_MeasurementInputTypeDomain_8698" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_MeasurementInputTypeAxis_8697" xlink:to="Locator_us-gaap_MeasurementInputTypeDomain_8698" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8699" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementScenarioAxis" xlink:label="Locator_srt_StatementScenarioAxis_8700" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8699" xlink:to="Locator_srt_StatementScenarioAxis_8700" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementScenarioAxis" xlink:label="Locator_srt_StatementScenarioAxis_8701" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="Locator_srt_ScenarioUnspecifiedDomain_8702" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_StatementScenarioAxis_8701" xlink:to="Locator_srt_ScenarioUnspecifiedDomain_8702" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="Locator_srt_ScenarioUnspecifiedDomain_8703" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioForecastMember" xlink:label="Locator_srt_ScenarioForecastMember_8704" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_srt_ScenarioUnspecifiedDomain_8703" xlink:to="Locator_srt_ScenarioForecastMember_8704" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8705" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="Locator_srt_StatementGeographicalAxis_8706" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8705" xlink:to="Locator_srt_StatementGeographicalAxis_8706" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="Locator_srt_StatementGeographicalAxis_8707" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="Locator_srt_SegmentGeographicalDomain_8708" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_srt_StatementGeographicalAxis_8707" xlink:to="Locator_srt_SegmentGeographicalDomain_8708" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8709" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="Locator_us-gaap_FairValueByMeasurementFrequencyAxis_8710" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8709" xlink:to="Locator_us-gaap_FairValueByMeasurementFrequencyAxis_8710" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8711" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="Locator_us-gaap_FinancialInstrumentAxis_8712" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8711" xlink:to="Locator_us-gaap_FinancialInstrumentAxis_8712" order="7.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8713" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationTechniqueAxis" xlink:label="Locator_us-gaap_ValuationTechniqueAxis_8714" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_8713" xlink:to="Locator_us-gaap_ValuationTechniqueAxis_8714" order="8.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationTechniqueAxis" xlink:label="Locator_us-gaap_ValuationTechniqueAxis_8715" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationTechniqueDomain" xlink:label="Locator_us-gaap_ValuationTechniqueDomain_8716" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_ValuationTechniqueAxis_8715" xlink:to="Locator_us-gaap_ValuationTechniqueDomain_8716" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationTechniqueAxis" xlink:label="Locator_us-gaap_ValuationTechniqueAxis_8717" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ValuationTechniqueDomain" xlink:label="Locator_us-gaap_ValuationTechniqueDomain_8718" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="Locator_us-gaap_ValuationTechniqueAxis_8717" xlink:to="Locator_us-gaap_ValuationTechniqueDomain_8718" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_8719" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="Locator_us-gaap_AssetsFairValueDisclosure_8720" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_8719" xlink:to="Locator_us-gaap_AssetsFairValueDisclosure_8720" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_8721" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProvedDevelopedReservesVolume" xlink:label="Locator_srt_ProvedDevelopedReservesVolume_8722" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_8721" xlink:to="Locator_srt_ProvedDevelopedReservesVolume_8722" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_8723" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_AverageSalesPrices" xlink:label="Locator_srt_AverageSalesPrices_8724" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_8723" xlink:to="Locator_srt_AverageSalesPrices_8724" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_8725" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate" xlink:label="Locator_us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate_8726" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_8725" xlink:to="Locator_us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate_8726" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:label="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_8727" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_FuturePricesAnnualIncreaseDecreasePercentage" xlink:label="Locator_cop_FuturePricesAnnualIncreaseDecreasePercentage_8728" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_8727" xlink:to="Locator_cop_FuturePricesAnnualIncreaseDecreasePercentage_8728" order="5.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/AcquisitionOfConchoResourcesIncFairValueOfConsiderationDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="Locator_us-gaap_BusinessAcquisitionAxis_8803" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_8804" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_BusinessAcquisitionAxis_8803" xlink:to="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_8804" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_8805" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_ConchoResourcesIncMember" xlink:label="Locator_cop_ConchoResourcesIncMember_8806" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionAcquireeDomain_8805" xlink:to="Locator_cop_ConchoResourcesIncMember_8806" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8807" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="Locator_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8808" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8807" xlink:to="Locator_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8808" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="Locator_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8809" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="Locator_us-gaap_BusinessAcquisitionAxis_8810" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8809" xlink:to="Locator_us-gaap_BusinessAcquisitionAxis_8810" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="Locator_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8811" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="Locator_us-gaap_AwardTypeAxis_8812" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8811" xlink:to="Locator_us-gaap_AwardTypeAxis_8812" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="Locator_us-gaap_AwardTypeAxis_8813" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8814" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_AwardTypeAxis_8813" xlink:to="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8814" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8815" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="Locator_us-gaap_RestrictedStockMember_8816" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8815" xlink:to="Locator_us-gaap_RestrictedStockMember_8816" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="Locator_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8817" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="Locator_us-gaap_SubsequentEventTypeAxis_8818" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8817" xlink:to="Locator_us-gaap_SubsequentEventTypeAxis_8818" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="Locator_us-gaap_SubsequentEventTypeAxis_8819" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="Locator_us-gaap_SubsequentEventTypeDomain_8820" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_SubsequentEventTypeAxis_8819" xlink:to="Locator_us-gaap_SubsequentEventTypeDomain_8820" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="Locator_us-gaap_SubsequentEventTypeDomain_8821" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="Locator_us-gaap_SubsequentEventMember_8822" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_SubsequentEventTypeDomain_8821" xlink:to="Locator_us-gaap_SubsequentEventMember_8822" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8823" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="Locator_us-gaap_CommonStockSharesIssued_8824" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8823" xlink:to="Locator_us-gaap_CommonStockSharesIssued_8824" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8825" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="Locator_us-gaap_CommonStockSharesOutstanding_8826" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8825" xlink:to="Locator_us-gaap_CommonStockSharesOutstanding_8826" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8827" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharesOutstanding" xlink:label="Locator_us-gaap_SharesOutstanding_8828" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8827" xlink:to="Locator_us-gaap_SharesOutstanding_8828" order="3.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8829" />
        <loc xlink:type="locator" xlink:href="cop-20201231.xsd#cop_BusinessCombinationShareExchangeRatio" xlink:label="Locator_cop_BusinessCombinationShareExchangeRatio_8830" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8829" xlink:to="Locator_cop_BusinessCombinationShareExchangeRatio_8830" order="4.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8831" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued" xlink:label="Locator_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_8832" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8831" xlink:to="Locator_us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_8832" order="5.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8833" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionSharePrice" xlink:label="Locator_us-gaap_BusinessAcquisitionSharePrice_8834" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8833" xlink:to="Locator_us-gaap_BusinessAcquisitionSharePrice_8834" order="6.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="Locator_us-gaap_BusinessAcquisitionLineItems_8835" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1" xlink:label="Locator_us-gaap_BusinessCombinationConsiderationTransferred1_8836" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_BusinessAcquisitionLineItems_8835" xlink:to="Locator_us-gaap_BusinessCombinationConsiderationTransferred1_8836" order="7.0" />
    </definitionLink>
    <definitionLink xlink:type="extended" xlink:role="http://conocophillips.com/role/EmployeeBenefitPlansProjectedAndAccumulatedBenefitObligationsInExcessOfFairValueDetails">
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8885" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_8886" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8885" xlink:to="Locator_us-gaap_DomesticPlanMember_8886" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DomesticPlanMember" xlink:label="Locator_us-gaap_DomesticPlanMember_8887" />
        <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd#country_US" xlink:label="Locator_country_US_8888" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DomesticPlanMember_8887" xlink:to="Locator_country_US_8888" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8889" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="Locator_us-gaap_ForeignPlanMember_8890" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8889" xlink:to="Locator_us-gaap_ForeignPlanMember_8890" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_8891" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="Locator_us-gaap_PensionPlansDefinedBenefitMember_8892" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_RetirementPlanTypeDomain_8891" xlink:to="Locator_us-gaap_PensionPlansDefinedBenefitMember_8892" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8893" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8894" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8893" xlink:to="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8894" order="-1.0" xbrldt:contextElement="segment" xbrldt:closed="true" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8895" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_8896" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8895" xlink:to="Locator_us-gaap_RetirementPlanTypeAxis_8896" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="Locator_us-gaap_RetirementPlanTypeAxis_8897" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="Locator_us-gaap_RetirementPlanTypeDomain_8898" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanTypeAxis_8897" xlink:to="Locator_us-gaap_RetirementPlanTypeDomain_8898" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8899" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8900" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="Locator_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8899" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8900" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8901" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8902" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="Locator_us-gaap_RetirementPlanSponsorLocationAxis_8901" xlink:to="Locator_us-gaap_RetirementPlanSponsorLocationDomain_8902" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8903" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract_8904" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8903" xlink:to="Locator_us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract_8904" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract_8905" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation" xlink:label="Locator_us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation_8906" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract_8905" xlink:to="Locator_us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation_8906" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract_8907" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets" xlink:label="Locator_us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets_8908" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract_8907" xlink:to="Locator_us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets_8908" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8909" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_8910" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanDisclosureLineItems_8909" xlink:to="Locator_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_8910" order="2.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_8911" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation" xlink:label="Locator_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_8912" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_8911" xlink:to="Locator_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_8912" order="1.0" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract" xlink:label="Locator_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_8913" />
        <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets" xlink:label="Locator_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_8914" />
        <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="Locator_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_8913" xlink:to="Locator_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_8914" order="2.0" />
    </definitionLink>
</linkbase>
