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  <xs:element id="ucbi_OtherComprehensiveIncomeAmortizationOfUnrealizedGainLossAvailableForSaleToHeldToMaturityAfterTax" abstract="false" name="OtherComprehensiveIncomeAmortizationOfUnrealizedGainLossAvailableForSaleToHeldToMaturityAfterTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanBeforeTaxAmount" abstract="false" name="OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanBeforeTaxAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanTaxExpenseBenefit1" abstract="false" name="OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanTaxExpenseBenefit1" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludeNetPeriodicPensionCostForDefinedBenefitPensionPlanNetOfTax" abstract="false" name="OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludeNetPeriodicPensionCostForDefinedBenefitPensionPlanNetOfTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_ComprehensiveIncomeLossBeforeTax" abstract="false" name="ComprehensiveIncomeLossBeforeTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_ComprehensiveIncomeLossTax" abstract="false" name="ComprehensiveIncomeLossTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_CommonStockIssuableMember" abstract="true" name="CommonStockIssuableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_StockIssuedDuringPeriodSharesDividendReinvestmentPlanEmployeeBenefitPlansAndDeferredCompensation" abstract="false" name="StockIssuedDuringPeriodSharesDividendReinvestmentPlanEmployeeBenefitPlansAndDeferredCompensation" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ucbi_StockIssuedDuringPeriodValueDividendReinvestmentPlanEmployeeBenefitPlansAndDeferredCompensation" abstract="false" name="StockIssuedDuringPeriodValueDividendReinvestmentPlanEmployeeBenefitPlansAndDeferredCompensation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_FinTrustMember" abstract="true" name="FinTrustMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_DebtSecuritiesHeldToMaturityAbstract" abstract="true" name="DebtSecuritiesHeldToMaturityAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_DebtSecuritiesAvailableForSaleAndEquitySecuritiesAbstract" abstract="true" name="DebtSecuritiesAvailableForSaleAndEquitySecuritiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_NetCashPaidForBranchDisposal" abstract="false" name="NetCashPaidForBranchDisposal" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_ProceedsFromOtherInvestingActivities" abstract="false" name="ProceedsFromOtherInvestingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_ProceedsFromOtherFinancingActivities" abstract="false" name="ProceedsFromOtherFinancingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_PaymentsForOtherFinancingActivities" abstract="false" name="PaymentsForOtherFinancingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_RegulatoryCapitalRequirementsUnderBankingRegulationsAbstract" abstract="true" name="RegulatoryCapitalRequirementsUnderBankingRegulationsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_UnrealizedGainLossOnHeldToMaturitySecuritiesTableTextBlock" abstract="false" name="UnrealizedGainLossOnHeldToMaturitySecuritiesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="ucbi_ScheduleOfDebtSecuritiesAccruedInterestReceivableTableTextBlock" abstract="false" name="ScheduleOfDebtSecuritiesAccruedInterestReceivableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="ucbi_ScheduleOfFinancingReceivablesSoldLoansTableTextBlock" abstract="false" name="ScheduleOfFinancingReceivablesSoldLoansTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="ucbi_ScheduleOfComponentsOfNetInvestmentInLeaseSalesTypeAndDirectFinancingLeasesTableTextBlock" abstract="false" name="ScheduleOfComponentsOfNetInvestmentInLeaseSalesTypeAndDirectFinancingLeasesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="ucbi_ScheduleOfFairValueHedgingInstrumentsCarryingValueAndBasisAdjustmentsTableTextBlock" abstract="false" name="ScheduleOfFairValueHedgingInstrumentsCarryingValueAndBasisAdjustmentsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="ucbi_ScheduleOfTaxCreditAndCertainEquityMethodInvestmentsTableTextBlock" abstract="false" name="ScheduleOfTaxCreditAndCertainEquityMethodInvestmentsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="ucbi_CommitmentsToFundOtherInvestments" abstract="false" name="CommitmentsToFundOtherInvestments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_UnsettledPurchasesOfSecuritiesAvailableForSale" abstract="false" name="UnsettledPurchasesOfSecuritiesAvailableForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_NoncashOrPartNoncashAcquisitionsAbstract" abstract="true" name="NoncashOrPartNoncashAcquisitionsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_FirstMiamiBancorpIncMember" abstract="true" name="FirstMiamiBancorpIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_ProgressBankTrustMember" abstract="true" name="ProgressBankTrustMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_BusinessAcquisitionMeasurementPeriod" abstract="false" name="BusinessAcquisitionMeasurementPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ucbi_ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember" abstract="true" name="ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember" abstract="true" name="CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_ResidentialMortgageBackedSecuritiesIssuedByPrivateEnterprisesMember" abstract="true" name="ResidentialMortgageBackedSecuritiesIssuedByPrivateEnterprisesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_CommercialMortgageBackedSecuritiesIssuedByPrivateEnterprisesMember" abstract="true" name="CommercialMortgageBackedSecuritiesIssuedByPrivateEnterprisesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_DebtSecuritiesAvailableForSaleAndHeldToMaturityTable" abstract="true" name="DebtSecuritiesAvailableForSaleAndHeldToMaturityTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_DebtSecuritiesAvailableForSaleAndHeldToMaturityLineItems" abstract="true" name="DebtSecuritiesAvailableForSaleAndHeldToMaturityLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_DebtSecuritiesHeldToMaturityMember" abstract="true" name="DebtSecuritiesHeldToMaturityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_DebtSecuritiesAvailableForSaleMember" abstract="true" name="DebtSecuritiesAvailableForSaleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_OwnerOccupiedCommercialRealEstateMember" abstract="true" name="OwnerOccupiedCommercialRealEstateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_IncomeProducingCommercialRealEstateMember" abstract="true" name="IncomeProducingCommercialRealEstateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_CommercialAndIndustrialClassificationMember" abstract="true" name="CommercialAndIndustrialClassificationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_EquipmentFinancingMember" abstract="true" name="EquipmentFinancingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_ManufacturedHousingLoanMember" abstract="true" name="ManufacturedHousingLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_FinancingReceivableLoansIncludingBasisAdjustment" abstract="false" name="FinancingReceivableLoansIncludingBasisAdjustment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_ManufacturedHousingLoansMember" abstract="true" name="ManufacturedHousingLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_ResidentialMortgageAndManufacturedHousingMember" abstract="true" name="ResidentialMortgageAndManufacturedHousingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_FinancingReceivableRepaymentThroughOperationOrSaleOfCollateralAmortizedCost" abstract="false" name="FinancingReceivableRepaymentThroughOperationOrSaleOfCollateralAmortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_FinancingReceivableModifiedNumberOfExtensions" abstract="false" name="FinancingReceivableModifiedNumberOfExtensions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ucbi_FinancingReceivableModifiedExtensionFromModification" abstract="false" name="FinancingReceivableModifiedExtensionFromModification" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ucbi_FinancingReceivableModifiedWeightedAverageExtensionTermGranted" abstract="false" name="FinancingReceivableModifiedWeightedAverageExtensionTermGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ucbi_FinancingReceivableExcludingAccruedInterestLoansInBankruptcyStatusModifiedDuringPeriod" abstract="false" name="FinancingReceivableExcludingAccruedInterestLoansInBankruptcyStatusModifiedDuringPeriod" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_FinancingReceivableModifiedPaymentDeferralWeightedAveragePeriod" abstract="false" name="FinancingReceivableModifiedPaymentDeferralWeightedAveragePeriod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ucbi_SBAUSDAGuaranteedLoansMember" abstract="true" name="SBAUSDAGuaranteedLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_SalesTypeAndDirectFinancingLeasesUnguaranteedResidualAsset" abstract="false" name="SalesTypeAndDirectFinancingLeasesUnguaranteedResidualAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_SalesTypeAndDirectFinancingLeasesInitialDirectCosts" abstract="false" name="SalesTypeAndDirectFinancingLeasesInitialDirectCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_SalesTypeAndDirectFinancingLeasesSecurityDeposits" abstract="false" name="SalesTypeAndDirectFinancingLeasesSecurityDeposits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_SalesTypeAndDirectFinancingLeasesDeferredSellingProfit" abstract="false" name="SalesTypeAndDirectFinancingLeasesDeferredSellingProfit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_SalesTypeAndDirectFinancingLeasesLeaseReceivableToBeReceivedAfterYearFour" abstract="false" name="SalesTypeAndDirectFinancingLeasesLeaseReceivableToBeReceivedAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_FinancingReceivableExcludingAccruedInterestNonaccrualWithAllowance" abstract="false" name="FinancingReceivableExcludingAccruedInterestNonaccrualWithAllowance" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_RateReductionMember" abstract="true" name="RateReductionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_PaymentDelayAndExtensionMember" abstract="true" name="PaymentDelayAndExtensionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_PaymentDelayMember" abstract="true" name="PaymentDelayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_ExtensionMember" abstract="true" name="ExtensionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_RateReductionAndPaymentDelayMember" abstract="true" name="RateReductionAndPaymentDelayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_RateReductionPaymentDelayAndExtensionMember" abstract="true" name="RateReductionPaymentDelayAndExtensionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_PaymentDelay1Member" abstract="true" name="PaymentDelay1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_Extension1Member" abstract="true" name="Extension1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_RateReduction1Member" abstract="true" name="RateReduction1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterestAndOffBalanceSheetCreditLossLiability" abstract="false" name="FinancingReceivableAllowanceForCreditLossExcludingAccruedInterestAndOffBalanceSheetCreditLossLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_FinancingReceivableAllowanceForCreditLossAndOffBalanceSheetCreditLossLiabilityPurchasedWithCreditDeteriorationIncrease" abstract="false" name="FinancingReceivableAllowanceForCreditLossAndOffBalanceSheetCreditLossLiabilityPurchasedWithCreditDeteriorationIncrease" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_FinancingReceivableAllowanceForCreditLossAndOffBalanceSheetCreditLossLiabilityWriteoff" abstract="false" name="FinancingReceivableAllowanceForCreditLossAndOffBalanceSheetCreditLossLiabilityWriteoff" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_FinancingReceivableAllowanceForCreditLossAndOffBalanceSheetCreditLossLiabilityRecovery" abstract="false" name="FinancingReceivableAllowanceForCreditLossAndOffBalanceSheetCreditLossLiabilityRecovery" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_InterestRateContractSubordinatedDebtMember" abstract="true" name="InterestRateContractSubordinatedDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_TrustPreferredSecuritiesHedgeMember" abstract="true" name="TrustPreferredSecuritiesHedgeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_CustomerSwapPositionMember" abstract="true" name="CustomerSwapPositionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_DealerOffsetToCustomerSwapPositionMember" abstract="true" name="DealerOffsetToCustomerSwapPositionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_RiskParticipationsMember" abstract="true" name="RiskParticipationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_MortgageBankingLoanCommitmentMember" abstract="true" name="MortgageBankingLoanCommitmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_MortgageBankingForwardSalesCommitmentMember" abstract="true" name="MortgageBankingForwardSalesCommitmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_BifurcatedEmbeddedDerivativeMember" abstract="true" name="BifurcatedEmbeddedDerivativeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_DealerOffsetsToBifurcatedEmbeddedDerivativesMember" abstract="true" name="DealerOffsetsToBifurcatedEmbeddedDerivativesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_LoansAndLeasesHeldForInvestmentMember" abstract="true" name="LoansAndLeasesHeldForInvestmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_CustomerDerivativesAndDealerOffsetsMember" abstract="true" name="CustomerDerivativesAndDealerOffsetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_BifurcatedEmbeddedDerivativesAndDealerOffsetsMember" abstract="true" name="BifurcatedEmbeddedDerivativesAndDealerOffsetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_MortgageBankingDerivativesMember" abstract="true" name="MortgageBankingDerivativesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" abstract="false" name="FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_FiniteLivedIntangibleAssetsExcludingHFS" abstract="false" name="FiniteLivedIntangibleAssetsExcludingHFS" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_ResidentialMortgageServicingAssetAtFairValueAmount" abstract="false" name="ResidentialMortgageServicingAssetAtFairValueAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_DerivativeAssetMember" abstract="true" name="DerivativeAssetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_SBAServicingRightsMember" abstract="true" name="SBAServicingRightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_ResidentialMortgageServicingRightsMember" abstract="true" name="ResidentialMortgageServicingRightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetBusinessCombinationAndProvisionalAdjustment" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetBusinessCombinationAndProvisionalAdjustment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSalesAndSettlements" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSalesAndSettlements" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityBusinessCombinationAndProvisionalAdjustment" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityBusinessCombinationAndProvisionalAdjustment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySalesAndSettlements" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySalesAndSettlements" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_DerivativeAssetsMortgageMember" abstract="true" name="DerivativeAssetsMortgageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_MeasurementInputPullThroughRateMember" abstract="true" name="MeasurementInputPullThroughRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_ResidentialMortgageServicingAssetMeasurementInput" abstract="false" name="ResidentialMortgageServicingAssetMeasurementInput" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="ucbi_MortgageLoansHeldForSaleAbstract" abstract="true" name="MortgageLoansHeldForSaleAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_MortgageLoansHeldForSaleOutstandingPrincipalBalance" abstract="false" name="MortgageLoansHeldForSaleOutstandingPrincipalBalance" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_LoansHeldForInvestmentAfterNonrecurringFairValueAdjustmentCarryingValue" abstract="false" name="LoansHeldForInvestmentAfterNonrecurringFairValueAdjustmentCarryingValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_DisposalGroupAssetsHeldForSaleAfterNonrecurringFairValueAdjustmentCarryingValue" abstract="false" name="DisposalGroupAssetsHeldForSaleAfterNonrecurringFairValueAdjustmentCarryingValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_MaximumRemainingMaturityOfFinancialInstrumentsHavingNoDefinedMaturity" abstract="false" name="MaximumRemainingMaturityOfFinancialInstrumentsHavingNoDefinedMaturity" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ucbi_RestrictedStockUnitsRSUAndPerformanceStockUnitsMember" abstract="true" name="RestrictedStockUnitsRSUAndPerformanceStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_EmployeeMember" abstract="true" name="EmployeeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_SalariesAndEmployeeBenefitExpenseMember" abstract="true" name="SalariesAndEmployeeBenefitExpenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_OtherOperatingExpenseMember" abstract="true" name="OtherOperatingExpenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_RestrictedStockUnitsAbstract" abstract="true" name="RestrictedStockUnitsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableNumber" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableNumber" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ucbi_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="ucbi_StockOptionsAbstract" abstract="true" name="StockOptionsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_AccumulatedAmortizationOfLossesIncludedInNetIncomeOnAvailableForSaleSecuritiesTransferredToHeldToMaturityMember" abstract="true" name="AccumulatedAmortizationOfLossesIncludedInNetIncomeOnAvailableForSaleSecuritiesTransferredToHeldToMaturityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_DiscountOnPreferredSharesRepurchased" abstract="false" name="DiscountOnPreferredSharesRepurchased" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_InvestmentsInLIHTCMember" abstract="true" name="InvestmentsInLIHTCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_RenewableEnergyInvestmentsMember" abstract="true" name="RenewableEnergyInvestmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_FintechFundsMember" abstract="true" name="FintechFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_LendingExposure" abstract="false" name="LendingExposure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_LynnHartonMember" abstract="true" name="LynnHartonMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_RichBradshawMember" abstract="true" name="RichBradshawMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
