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  <xs:element id="ucbi_CommitmentForAdditionalFund" abstract="false" name="CommitmentForAdditionalFund" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_DealerOffsetToCustomerSwapPositionMember" abstract="true" name="DealerOffsetToCustomerSwapPositionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_DepositBalanceSheetAccountMember" abstract="true" name="DepositBalanceSheetAccountMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_BifurcatedEmbeddedDerivativesAndDealerOffsetsMember" abstract="true" name="BifurcatedEmbeddedDerivativesAndDealerOffsetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_MaximumRemainingMaturityOfFinancialInstrumentsHavingNoDefinedMaturity" abstract="false" name="MaximumRemainingMaturityOfFinancialInstrumentsHavingNoDefinedMaturity" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ucbi_BifurcatedEmbeddedDerivativeMember" abstract="true" name="BifurcatedEmbeddedDerivativeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_CustomerDerivativesAndDealerOffsetsMember" abstract="true" name="CustomerDerivativesAndDealerOffsetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_FederalFundsSoldCommercialPaperAndDepositsInBanks" abstract="false" name="FederalFundsSoldCommercialPaperAndDepositsInBanks" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_AquestaFinancialHoldingsIncMember" abstract="true" name="AquestaFinancialHoldingsIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_FinancingReceivableAllowanceForCreditLossAndOffBalanceSheetCreditLossLiabilityPurchasedWithCreditDeteriorationIncrease" abstract="false" name="FinancingReceivableAllowanceForCreditLossAndOffBalanceSheetCreditLossLiabilityPurchasedWithCreditDeteriorationIncrease" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_DebtSecuritiesHeldToMaturityAbstract" abstract="true" name="DebtSecuritiesHeldToMaturityAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <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_ProceedsFromOtherInvestments" abstract="false" name="ProceedsFromOtherInvestments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_ReliantBancorpIncMember" abstract="true" name="ReliantBancorpIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_OwnerOccupiedCommercialRealEstateMember" abstract="true" name="OwnerOccupiedCommercialRealEstateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_EquipmentFinancingMember" abstract="true" name="EquipmentFinancingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_CommercialMortgageBackedSecuritiesIssuedByPrivateEnterprisesMember" abstract="true" name="CommercialMortgageBackedSecuritiesIssuedByPrivateEnterprisesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_PaymentsForOtherInvestingActivities" abstract="false" name="PaymentsForOtherInvestingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_RestrictedStockUnitsRSUAndPerformanceStockUnitsMember" abstract="true" name="RestrictedStockUnitsRSUAndPerformanceStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_NumberOfBranches" abstract="false" name="NumberOfBranches" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <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_FinancingReceivableAllowanceForCreditLossAndOffBalanceSheetCreditLossLiabilityRecovery" abstract="false" name="FinancingReceivableAllowanceForCreditLossAndOffBalanceSheetCreditLossLiabilityRecovery" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_FinancingReceivableCOVIDRelatedDeferral" abstract="false" name="FinancingReceivableCOVIDRelatedDeferral" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_SalesTypeAndDirectFinancingLeasesPurchaseAccountingPremium" abstract="false" name="SalesTypeAndDirectFinancingLeasesPurchaseAccountingPremium" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_ResidentialMortgageServicingAssetMeasurementInput" abstract="false" name="ResidentialMortgageServicingAssetMeasurementInput" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="ucbi_CommercialAndIndustrialClassificationPPPLoanComponentMember" abstract="true" name="CommercialAndIndustrialClassificationPPPLoanComponentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_CommonStockIssuableShares" abstract="false" name="CommonStockIssuableShares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <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_MortgageBankingForwardSalesCommitmentMember" abstract="true" name="MortgageBankingForwardSalesCommitmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember" abstract="true" name="CommercialMortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_RegulatoryCapitalRequirementsUnderBankingRegulationsAbstract" abstract="true" name="RegulatoryCapitalRequirementsUnderBankingRegulationsAbstract" 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_SalesTypeAndDirectFinancingLeasesSecurityDeposits" abstract="false" name="SalesTypeAndDirectFinancingLeasesSecurityDeposits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_OtherTypeOfModificationMember" abstract="true" name="OtherTypeOfModificationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_MortgageBankingDerivativesMember" abstract="true" name="MortgageBankingDerivativesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_TrustPreferredSecuritiesHedgeMember" abstract="true" name="TrustPreferredSecuritiesHedgeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_BrokeredCertificateOfDepositMember" abstract="true" name="BrokeredCertificateOfDepositMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_DealerOffsetsToBifurcatedEmbeddedDerivativesMember" abstract="true" name="DealerOffsetsToBifurcatedEmbeddedDerivativesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_OtherComprehensiveIncomeReclassificationAdjustmentForAvailableForSaleTransferredToHeldToMaturitySecuritiesAfterTax" abstract="false" name="OtherComprehensiveIncomeReclassificationAdjustmentForAvailableForSaleTransferredToHeldToMaturitySecuritiesAfterTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_UnsettledGovernmentGuaranteedLoanSales" abstract="false" name="UnsettledGovernmentGuaranteedLoanSales" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" 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_ScheduleOfFinancingReceivablesSoldLoansTableTextBlock" abstract="false" name="ScheduleOfFinancingReceivablesSoldLoansTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <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_SalesTypeAndDirectFinancingLeasesInitialDirectCosts" abstract="false" name="SalesTypeAndDirectFinancingLeasesInitialDirectCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_CommonStocksIssuable" abstract="false" name="CommonStocksIssuable" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_SalariesAndEmployeeBenefitExpenseMember" abstract="true" name="SalariesAndEmployeeBenefitExpenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_SBAServicingRightsMember" abstract="true" name="SBAServicingRightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_RiskParticipationsMember" abstract="true" name="RiskParticipationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_ThreeShoresBancorporationIncMember" abstract="true" name="ThreeShoresBancorporationIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_DerivativeAssetMember" abstract="true" name="DerivativeAssetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_SBAUSDAGuaranteedLoansMember" abstract="true" name="SBAUSDAGuaranteedLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_CustomerSwapPositionMember" abstract="true" name="CustomerSwapPositionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_NoncashOrPartNoncashAcquisitionsAbstract" abstract="true" name="NoncashOrPartNoncashAcquisitionsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_AccruedPurchasePriceAndContingentConsideration" abstract="false" name="AccruedPurchasePriceAndContingentConsideration" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_MortgageLoansHeldForSaleAbstract" abstract="true" name="MortgageLoansHeldForSaleAbstract" 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-types:textBlockItemType"/>
  <xs:element id="ucbi_MeasurementInputPullThroughRateMember" abstract="true" name="MeasurementInputPullThroughRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_MortgageLoanRevenueMember" abstract="true" name="MortgageLoanRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_OtherNoninterestIncomeMember" abstract="true" name="OtherNoninterestIncomeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_IncomeProducingCommercialRealEstateMember" abstract="true" name="IncomeProducingCommercialRealEstateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_ScheduleOfDebtSecuritiesAccruedInterestReceivableTableTextBlock" abstract="false" name="ScheduleOfDebtSecuritiesAccruedInterestReceivableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <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_ScheduleOfFairValueHedgingInstrumentsCarryingValueAndBasisAdjustmentsTableTextBlock" abstract="false" name="ScheduleOfFairValueHedgingInstrumentsCarryingValueAndBasisAdjustmentsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <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_SalesTypeAndDirectFinancingLeasesDeferredSellingProfit" abstract="false" name="SalesTypeAndDirectFinancingLeasesDeferredSellingProfit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" 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:schema>
