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  <xsd:element id="bokf_Disgorgedfees" name="Disgorgedfees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_EnergyMember" name="EnergyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_EnergyProducersMember" name="EnergyProducersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_EquitySecuritiesAndMutualFundsMember" name="EquitySecuritiesAndMutualFundsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_FairValueByAssetSubClassAxis" name="FairValueByAssetSubClassAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_FairValueByAssetSubClassDomain" name="FairValueByAssetSubClassDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_FairValueImpairedLoansMember" name="FairValueImpairedLoansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_FairValueInputsFairValueMeasuredOnNonrecurringBasisQuantitativeInformationTableTextBlock" name="FairValueInputsFairValueMeasuredOnNonrecurringBasisQuantitativeInformationTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_FairValueInputsFairValueMeasuredOnRecurringBasisQuantitativeInformationTableTextBlock" name="FairValueInputsFairValueMeasuredOnRecurringBasisQuantitativeInformationTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_FairValueMeasurementMeasuredOnNonRecurringBasisSignificantUnobservableInputsQuantitativeInformationAbstract" name="FairValueMeasurementMeasuredOnNonRecurringBasisSignificantUnobservableInputsQuantitativeInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_FairValueMeasurementsMeasuredOnRecurringBasisSignificantUnobservableInputsQuantitativeInformationAbstract" name="FairValueMeasurementsMeasuredOnRecurringBasisSignificantUnobservableInputsQuantitativeInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_FairValueOptionSecurities" name="FairValueOptionSecurities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_FairValueOptionSecuritiesTableTextBlock" name="FairValueOptionSecuritiesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_FairValueOptionSecuritiesUnrealizedGainOrLoss" name="FairValueOptionSecuritiesUnrealizedGainOrLoss" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_FairValueRealEstateAndOtherRepossessedAssetsMember" name="FairValueRealEstateAndOtherRepossessedAssetsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_FairValueofImpairedLoansasPercentageofUnpaidPrincipalBalance" name="FairValueofImpairedLoansasPercentageofUnpaidPrincipalBalance" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_FairValueofResidentialMortgageLoansHeldforSale" name="FairValueofResidentialMortgageLoansHeldforSale" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_Feesandcommissionrevenuenotfromcontractswithcustomers" name="Feesandcommissionrevenuenotfromcontractswithcustomers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_FeesandcommissionsrevenueMember" name="FeesandcommissionsrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ForwardSalesContractsMember" name="ForwardSalesContractsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_GainLossonFinancialInstrumentsNet" name="GainLossonFinancialInstrumentsNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bokf_GainOnFairValueOptionSecuritiesNet" name="GainOnFairValueOptionSecuritiesNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_GainlossontradingMember" name="GainlossontradingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_HeldToMaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsNominalYield" name="HeldToMaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsNominalYield" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_HeldToMaturitySecuritiesDebtMaturitiesNominalYield" name="HeldToMaturitySecuritiesDebtMaturitiesNominalYield" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_HeldToMaturitySecuritiesDebtMaturitiesNominalYieldAbstract" name="HeldToMaturitySecuritiesDebtMaturitiesNominalYieldAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_HeldToMaturitySecuritiesDebtMaturitiesRollingAfterTenYearsNominalYield" name="HeldToMaturitySecuritiesDebtMaturitiesRollingAfterTenYearsNominalYield" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_HeldToMaturitySecuritiesDebtMaturitiesRollingYearSixThroughTenNominalYield" name="HeldToMaturitySecuritiesDebtMaturitiesRollingYearSixThroughTenNominalYield" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_HeldToMaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveNominalYield" name="HeldToMaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveNominalYield" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_HeldToMaturitySecuritiesDebtMaturitiesWeightedAverageMaturity" name="HeldToMaturitySecuritiesDebtMaturitiesWeightedAverageMaturity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_HeldtoMaturitySecuritiesDebtMaturitiesEffectivetaxratefornominalyieldcalculation" name="HeldtoMaturitySecuritiesDebtMaturitiesEffectivetaxratefornominalyieldcalculation" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_HeldtomaturitySecuritiesDebtMaturitiesAverageExpectedLifeofMortgagebackedSecurities" name="HeldtomaturitySecuritiesDebtMaturitiesAverageExpectedLifeofMortgagebackedSecurities" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_HomeEquityLoansAdditionalDiscretionaryRevolvingPeriod" name="HomeEquityLoansAdditionalDiscretionaryRevolvingPeriod" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_HomeEquityLoansDescription" name="HomeEquityLoansDescription" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_Homeequityloansmaximum" name="Homeequityloansmaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_ImpairedAffiliatedLoans" name="ImpairedAffiliatedLoans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_IncreaseInUSGovernmentGuaranteedLoansEligibleForRepurchase" name="IncreaseInUSGovernmentGuaranteedLoansEligibleForRepurchase" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bokf_Increaseofreportedrightofuseassetsandliabilities" name="Increaseofreportedrightofuseassetsandliabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_Increaseofreportedrightofuseassetsandliabilitiesmaximum" name="Increaseofreportedrightofuseassetsandliabilitiesmaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_IndustrialMember" name="IndustrialMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_InstitutionaltrustretirementplanservicesrevenueMember" name="InstitutionaltrustretirementplanservicesrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_InterestRateSpreadMember" name="InterestRateSpreadMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_InterestRevenueOnFairValueOptionSecurities" name="InterestRevenueOnFairValueOptionSecurities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bokf_Interestbearingcashandcashequivalents" name="Interestbearingcashandcashequivalents" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_InterestincomeInterestbearingcashandcashequivalents" name="InterestincomeInterestbearingcashandcashequivalents" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_InternalRiskManagementProgramsMember" name="InternalRiskManagementProgramsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_InternallyRiskGradedAllowance" name="InternallyRiskGradedAllowance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bokf_InternallyRiskGradedRecordedInvestment" name="InternallyRiskGradedRecordedInvestment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_InvestmentGradeTaxExemptSecuritiesYieldSpreadOverComparableSecuritiesMaximum" name="InvestmentGradeTaxExemptSecuritiesYieldSpreadOverComparableSecuritiesMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_InvestmentGradeTaxExemptSecuritiesYieldSpreadOverComparableSecuritiesMinimum" name="InvestmentGradeTaxExemptSecuritiesYieldSpreadOverComparableSecuritiesMinimum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_InvestmentbankingrevenueMember" name="InvestmentbankingrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_InvestmentmanagementservicesandotherMember" name="InvestmentmanagementservicesandotherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_LiquidityDiscountonMortgageLoansQualifyingforSaletoUSGovtAgencies" name="LiquidityDiscountonMortgageLoansQualifyingforSaletoUSGovtAgencies" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_LoansAndAllowanceForCreditLossesAbstract" name="LoansAndAllowanceForCreditLossesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_LoansNumberOfDaysAfterNotificationOfChapter7BankruptcyNonRiskGradedLoanIsChargedOff" name="LoansNumberOfDaysAfterNotificationOfChapter7BankruptcyNonRiskGradedLoanIsChargedOff" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_LoansNumberOfDaysAfterNotificationOfChapter7BankruptcyNonRiskGradedLoanIsPlacedOnNonaccruingStatus" name="LoansNumberOfDaysAfterNotificationOfChapter7BankruptcyNonRiskGradedLoanIsPlacedOnNonaccruingStatus" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_LoansNumberOfDaysPastDueForNonRiskGradedLoanToBePlacedOnNonaccruingStatus" name="LoansNumberOfDaysPastDueForNonRiskGradedLoanToBePlacedOnNonaccruingStatus" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_LoansServicedForOthers" name="LoansServicedForOthers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_LoansServicedForOthers30To59DaysPastDue" name="LoansServicedForOthers30To59DaysPastDue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_LoansServicedForOthers60To89DaysPastDue" name="LoansServicedForOthers60To89DaysPastDue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_LoansServicedForOthersCurrent" name="LoansServicedForOthersCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_LoansServicedForOtherstEqualToGreaterThan90DaysPastDue" name="LoansServicedForOtherstEqualToGreaterThan90DaysPastDue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_ManagementknowledgeofIndustryMember" name="ManagementknowledgeofIndustryMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ManufacturingMember" name="ManufacturingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MaxNoOfDaysAfterWhichPastDueNonRiskGradedLoansAreChargedOff" name="MaxNoOfDaysAfterWhichPastDueNonRiskGradedLoansAreChargedOff" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MaximumAmountOfLoansWithBalancesBelowThreshold" name="MaximumAmountOfLoansWithBalancesBelowThreshold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_MaximumDebtToIncomeRatioOnLoans" name="MaximumDebtToIncomeRatioOnLoans" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_MaximumLoanAmountForCertainIndividualLoansInCategory" name="MaximumLoanAmountForCertainIndividualLoansInCategory" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_MaximumLoanToValueRatioOnLoans" name="MaximumLoanToValueRatioOnLoans" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_MaximumNumberofDaysOutstandingForResidentialMortgageCommitments" name="MaximumNumberofDaysOutstandingForResidentialMortgageCommitments" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MaximumNumberofDaysforDeliveryofForwardSalesContracts" name="MaximumNumberofDaysforDeliveryofForwardSalesContracts" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MaximumPeriodforFixedRateonVariableRateJumboResidentialMortgageLoan" name="MaximumPeriodforFixedRateonVariableRateJumboResidentialMortgageLoan" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_MerchantservicesrevenueMember" name="MerchantservicesrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MinimumFicoRequiredForLoanApproval" name="MinimumFicoRequiredForLoanApproval" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_MinimumLoanToValueRatioOnLoans" name="MinimumLoanToValueRatioOnLoans" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_MinimumNoOfDaysAfterWhichPastDueNonRiskGradedLoansAreChargedOff" name="MinimumNoOfDaysAfterWhichPastDueNonRiskGradedLoansAreChargedOff" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MinimumNumberofDaysOutstandingForResidentialMortgageCommitments" name="MinimumNumberofDaysOutstandingForResidentialMortgageCommitments" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MinimumNumberofDaysforDeliveryofForwardSalesContracts" name="MinimumNumberofDaysforDeliveryofForwardSalesContracts" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MinimumPeriodForFixedRateOnVariableRateJumboResidentialMortgageLoans" name="MinimumPeriodForFixedRateOnVariableRateJumboResidentialMortgageLoans" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_MisuseofRevenuesPledgedtoMunicipalBondsMember" name="MisuseofRevenuesPledgedtoMunicipalBondsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MortgageBankingActivitiesTextBlock" name="MortgageBankingActivitiesTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MortgageBankingCosts" name="MortgageBankingCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_MortgageBankingRevenue" name="MortgageBankingRevenue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_MortgageBankingRevenueAbstract" name="MortgageBankingRevenueAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MortgageBankingRevenueTableTextBlock" name="MortgageBankingRevenueTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_MortgageProductionRevenue" name="MortgageProductionRevenue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bokf_MortgageServicingFees" name="MortgageServicingFees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_MortgagebankingrevenueMember" name="MortgagebankingrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_MortgageproductionrevenueMember" name="MortgageproductionrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_MortgageservicingrevenueMember" name="MortgageservicingrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_NIRexpensefrominternalsources" name="NIRexpensefrominternalsources" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bokf_NetChangeInDemandDepositsTransactionDepositsAndSavingsAccounts" name="NetChangeInDemandDepositsTransactionDepositsAndSavingsAccounts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_NetChangeInDerivativeMarginAccounts" name="NetChangeInDerivativeMarginAccounts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_Netchangeinunrealizedgainonmortgageloansheldforsale" name="Netchangeinunrealizedgainonmortgageloansheldforsale" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bokf_Netdirectcontribution" name="Netdirectcontribution" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bokf_Netgainonmortgageloansheldforsale" name="Netgainonmortgageloansheldforsale" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bokf_NirExpenseFromExternalSources" name="NirExpenseFromExternalSources" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bokf_NonGradedAllowance" name="NonGradedAllowance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bokf_NonGradedRecordedInvestment" name="NonGradedRecordedInvestment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_NumberOfDaysForPastDueResidentialMortgageLoansHeldforSale" name="NumberOfDaysForPastDueResidentialMortgageLoansHeldforSale" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_NumberOfPrivateEquityFundsOfWhichEntityIsGeneralPartner" name="NumberOfPrivateEquityFundsOfWhichEntityIsGeneralPartner" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_NumberofVisaClassASharesVisaClassBSharesAreConvertibleTo" name="NumberofVisaClassASharesVisaClassBSharesAreConvertibleTo" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_NumberofindividualswhopurchasedfacilitiesfromtheprincipalssubjecttoSECNewJerseyproceedings" name="NumberofindividualswhopurchasedfacilitiesfromtheprincipalssubjecttoSECNewJerseyproceedings" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_NumberofprincipalsinSECNewJerseyproceedings" name="NumberofprincipalsinSECNewJerseyproceedings" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_NumeratorAbstract" name="NumeratorAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_OfficeMember" name="OfficeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_OtherCommercialAndIndustrialMember" name="OtherCommercialAndIndustrialMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_OtherCommercialRealEstateMember" name="OtherCommercialRealEstateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_OtherInvestorLoansMember" name="OtherInvestorLoansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_OtherTradingSecuritiesMember" name="OtherTradingSecuritiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_OtherVariableInterestEntitiesMember" name="OtherVariableInterestEntitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_Outstandingprincipalaccruedinterestandotheramountsrequiredbybonddocuments" name="Outstandingprincipalaccruedinterestandotheramountsrequiredbybonddocuments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_OverdraftfeerevenueMember" name="OverdraftfeerevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_PercentageOfCommittedEnergyProductionLoansSecuredByNaturalGas" name="PercentageOfCommittedEnergyProductionLoansSecuredByNaturalGas" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_PercentageOfCommittedEnergyProductionLoansSecuredByOil" name="PercentageOfCommittedEnergyProductionLoansSecuredByOil" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_PercentageOfHomeEquityPortfolioComprisedOfFirstLienLoans" name="PercentageOfHomeEquityPortfolioComprisedOfFirstLienLoans" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_PercentageOfHomeEquityPortfolioComprisedOfJuniorLienLoans" name="PercentageOfHomeEquityPortfolioComprisedOfJuniorLienLoans" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_PercentageOfJuniorLienHomeEquityLoansThatAreAmortizingTermLoans" name="PercentageOfJuniorLienHomeEquityLoansThatAreAmortizingTermLoans" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_PercentageOfJuniorLienHomeEquityLoansThatAreRevolvingLinesOfCredit" name="PercentageOfJuniorLienHomeEquityLoansThatAreRevolvingLinesOfCredit" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_PercentageOfLoanPortfolioSecuredByPropertyInOklahoma" name="PercentageOfLoanPortfolioSecuredByPropertyInOklahoma" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_PercentageOfLoanPortfolioSecuredByPropertyInTexas" name="PercentageOfLoanPortfolioSecuredByPropertyInTexas" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_PercentageofLoanClasstoTotalLoans" name="PercentageofLoanClasstoTotalLoans" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_PercentageofLoanPortfolioAttributedtoOklahoma" name="PercentageofLoanPortfolioAttributedtoOklahoma" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_PercentageofLoanPortfolioAttributedtoTexas" name="PercentageofLoanPortfolioAttributedtoTexas" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_PermanentMortgagesGuaranteedByUsGovernmentAgenciesMember" name="PermanentMortgagesGuaranteedByUsGovernmentAgenciesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_PermanentResidentialMortgageMember" name="PermanentResidentialMortgageMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_PersonaltrustrevenueMember" name="PersonaltrustrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_Primarysecondarymortgageratespread" name="Primarysecondarymortgageratespread" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_PrivateEquityFundsVariableInterestEntitiesMember" name="PrivateEquityFundsVariableInterestEntitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_PurchaseoffacilitiesfromprincipalssubjecttoSECNewJerseyproceedingsMember" name="PurchaseoffacilitiesfromprincipalssubjecttoSECNewJerseyproceedingsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_QuotedpricesofloanssoldinsecuritizationtransactionswithaliquiditydiscountappliedMember" name="QuotedpricesofloanssoldinsecuritizationtransactionswithaliquiditydiscountappliedMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_RangeofInterestRatesusedtoValueSecurities" name="RangeofInterestRatesusedtoValueSecurities" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_Rangeoffairvalueasapercentageofpartvalue" name="Rangeoffairvalueasapercentageofpartvalue" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_ReclassificationAdjustmentsIncludedInEarningsAbstract" name="ReclassificationAdjustmentsIncludedInEarningsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_RecordedInvestmentAbstract" name="RecordedInvestmentAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_RecoverableoilandgasreservesforwardlookingcommoditypricesandestimatedoperatingcostsMember" name="RecoverableoilandgasreservesforwardlookingcommoditypricesandestimatedoperatingcostsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_RelatedAllowanceAbstract" name="RelatedAllowanceAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_RepossessedAssetsExpenseAndNetLosses" name="RepossessedAssetsExpenseAndNetLosses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ResidentialMortgageLoanCommitmentsMember" name="ResidentialMortgageLoanCommitmentsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_ResidentialMortgageLoansHeldForSaleNonperforming" name="ResidentialMortgageLoansHeldForSaleNonperforming" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_ResidentialMortgageLoansHeldForSaleTableTextBlock" name="ResidentialMortgageLoansHeldForSaleTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_ResidentialMortgageLoansHeldForSaleUnpaidPrincipalBalanceGross" name="ResidentialMortgageLoansHeldForSaleUnpaidPrincipalBalanceGross" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_ResidentialMortgageLoansHeldforSaleMember" name="ResidentialMortgageLoansHeldforSaleMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_ResidentialMortgageLoansServicedNumberOfLoans" name="ResidentialMortgageLoansServicedNumberOfLoans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bokf_ResidentialMortgageLoansServicedOutstandingPrincipal" name="ResidentialMortgageLoansServicedOutstandingPrincipal" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bokf_ResidentialMortgageLoansServicedWeightedAverageRemainingTerm" name="ResidentialMortgageLoansServicedWeightedAverageRemainingTerm" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ResidentialconstructionandlanddevelopmentMember" name="ResidentialconstructionandlanddevelopmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_RetailbrokeragerevenueMember" name="RetailbrokeragerevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_RevolvingPeriodforHomeEquityLoans" name="RevolvingPeriodforHomeEquityLoans" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ScheduleOfAccumulatedOtherComprehensiveIncomeRollForward" name="ScheduleOfAccumulatedOtherComprehensiveIncomeRollForward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ScheduleOfAgingOfMortgageLoansServicedForOthersLineItems" name="ScheduleOfAgingOfMortgageLoansServicedForOthersLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ScheduleOfAgingOfMortgageLoansServicedForOthersTable" name="ScheduleOfAgingOfMortgageLoansServicedForOthersTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ScheduleOfFairValueOptionSecuritiesLineItems" name="ScheduleOfFairValueOptionSecuritiesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ScheduleOfFairValueOptionSecuritiesTable" name="ScheduleOfFairValueOptionSecuritiesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ScheduleOfResidentialMortgageLoansHeldForSaleLineItems" name="ScheduleOfResidentialMortgageLoansHeldForSaleLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ScheduleOfResidentialMortgageLoansHeldForSaleTable" name="ScheduleOfResidentialMortgageLoansHeldForSaleTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_SecuritiesFairValueOptionSecuritiesAbstract" name="SecuritiesFairValueOptionSecuritiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_SegmentReportingChangeinFairValueofMortgageServicingRights" name="SegmentReportingChangeinFairValueofMortgageServicingRights" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_ServicesMember" name="ServicesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueDelinquentLoanServiceCostMinimum" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueDelinquentLoanServiceCostMinimum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueDelinquentLoanSvcCostMaximum" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueDelinquentLoanSvcCostMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueEscrowEarningsRate" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueEscrowEarningsRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueForeclosureLoanServiceCostMaximum" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueForeclosureLoanServiceCostMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueForeclosureLoanServiceCostMinimum" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValueForeclosureLoanServiceCostMinimum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePerformingLoanServiceCostMaximum" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePerformingLoanServiceCostMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePerformingLoanServiceCostMinimum" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePerformingLoanServiceCostMinimum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeedMaximum" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeedMaximum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeedMinimum" name="ServicingAssetsAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeedMinimum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_SpecificAllowanceMember" name="SpecificAllowanceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_SummaryOfMortgageServicingRightsAbstract" name="SummaryOfMortgageServicingRightsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_SummaryOfMortgageServicingRightsTableTextBlock" name="SummaryOfMortgageServicingRightsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_SwitchgrassHoldingsLLCMember" name="SwitchgrassHoldingsLLCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_TaxCreditVariableInterestEntitiesMember" name="TaxCreditVariableInterestEntitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_TbaResidentialMortgageBackedSecuritiesMember" name="TbaResidentialMortgageBackedSecuritiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_TotalFeesAndCommissions" name="TotalFeesAndCommissions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bokf_TradingSecuritiesNetUnrealizedGainsLosses" name="TradingSecuritiesNetUnrealizedGainsLosses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_TransFundEFTnetworkrevenueMember" name="TransFundEFTnetworkrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_TransactioncardrevenueMember" name="TransactioncardrevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_TroubledDebtFinancingReceivableModificationPerformingAccordingToModifiedTerms" name="TroubledDebtFinancingReceivableModificationPerformingAccordingToModifiedTerms" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_USAgencyResidentalMortgageBackedSecuritiesOtherMember" name="USAgencyResidentalMortgageBackedSecuritiesOtherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_VisaMembershipMember" name="VisaMembershipMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bokf_WealthManagementMember" name="WealthManagementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bokf_WeightedAverageInterestRateofLoansServicedforOthers" name="WeightedAverageInterestRateofLoansServicedforOthers" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bokf_WholesaleAndRetailMember" name="WholesaleAndRetailMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
