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  <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-types1: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_FinancingReceivableAllowanceForCreditLossesPolicyTextBlock" abstract="false" name="FinancingReceivableAllowanceForCreditLossesPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="ucbi_BankOwnedLifeInsurancePolicyTextBlock" abstract="false" name="BankOwnedLifeInsurancePolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="ucbi_DividendRestrictionsPolicyTextBlock" abstract="false" name="DividendRestrictionsPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <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_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_ScheduleOfFairValueHedgingInstrumentsCarryingValueAndBasisAdjustmentsTableTextBlock" abstract="false" name="ScheduleOfFairValueHedgingInstrumentsCarryingValueAndBasisAdjustmentsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="ucbi_ScheduleOfRightOfUseAssetsAndLeaseLiabilitiesOperatingTableTextBlock" abstract="false" name="ScheduleOfRightOfUseAssetsAndLeaseLiabilitiesOperatingTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1: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_AccountingPoliciesTable" abstract="true" name="AccountingPoliciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_LoanPortfolioMember" abstract="true" name="LoanPortfolioMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_RiskCategoryAxis" abstract="true" name="RiskCategoryAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_RiskCategoryDomain" abstract="true" name="RiskCategoryDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_RealEstateValuationMember" abstract="true" name="RealEstateValuationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_AccountingPoliciesLineItems" abstract="true" name="AccountingPoliciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_ContingentConsiderationReceivable" abstract="false" name="ContingentConsiderationReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_TermOfContingentConsideration" abstract="false" name="TermOfContingentConsideration" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ucbi_NumberOfBranches" abstract="false" name="NumberOfBranches" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansHeldForSale" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBankOwnedLifeInsurance" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBankOwnedLifeInsurance" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeposits" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeposits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedShortTermBorrowings" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedShortTermBorrowings" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFederalHomeLoanBankAdvances" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFederalHomeLoanBankAdvances" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_BusinessCombinationConsiderationTransferredConvertedStockOptions" abstract="false" name="BusinessCombinationConsiderationTransferredConvertedStockOptions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" 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-types1:domainItemType"/>
  <xs:element id="ucbi_CashFlowTable" abstract="true" name="CashFlowTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_CashFlowLineItems" abstract="true" name="CashFlowLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_DebtSecuritiesHeldToMaturityExcludingAccruedInterestTransferredFromAvailableForSaleFairValue" abstract="false" name="DebtSecuritiesHeldToMaturityExcludingAccruedInterestTransferredFromAvailableForSaleFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" 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_OtherNonCashConsideration" abstract="false" name="OtherNonCashConsideration" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_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_FinancingReceivableModifiedWeightedAveragePaymentDelayTermIncreaseFromModification" abstract="false" name="FinancingReceivableModifiedWeightedAveragePaymentDelayTermIncreaseFromModification" 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_FinancingReceivableAllowanceForCreditLossPeriodIncreaseDecreaseQualitativeAdjustment" abstract="false" name="FinancingReceivableAllowanceForCreditLossPeriodIncreaseDecreaseQualitativeAdjustment" 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_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_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_FinancingReceivableModifiedPaymentDeferralWeightedAveragePeriod" abstract="false" name="FinancingReceivableModifiedPaymentDeferralWeightedAveragePeriod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ucbi_FinancialAssetNonaccrualMember" abstract="true" name="FinancialAssetNonaccrualMember" 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_DerivativesLoansMember" abstract="true" name="DerivativesLoansMember" 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-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_ServicingAssetAtFairValueAcquired" abstract="false" name="ServicingAssetAtFairValueAcquired" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_ScheduleOfServicingAssetTable" abstract="true" name="ScheduleOfServicingAssetTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_ScheduleOfServicingAssetLineItems" abstract="true" name="ScheduleOfServicingAssetLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_TwoThousandTwentyNineSubordinatedDebenturesMember" abstract="true" name="TwoThousandTwentyNineSubordinatedDebenturesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_TrustPreferredSecuritiesMember" abstract="true" name="TrustPreferredSecuritiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_TwoThousandTwentySevenSeniorDebenturesMember" abstract="true" name="TwoThousandTwentySevenSeniorDebenturesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_TwoThousandThirtySeniorDebenturesMember" abstract="true" name="TwoThousandThirtySeniorDebenturesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_TwoThousandTwentyEightSubordinatedDebenturesMember" abstract="true" name="TwoThousandTwentyEightSubordinatedDebenturesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_TidelandsStatutoryTrustOneMember" abstract="true" name="TidelandsStatutoryTrustOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_FourOaksStatutoryTrustOneMember" abstract="true" name="FourOaksStatutoryTrustOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_CommunityFirstCapitalTrustOneMember" abstract="true" name="CommunityFirstCapitalTrustOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_CommunityFirstCapitalTrustTwoMember" abstract="true" name="CommunityFirstCapitalTrustTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_CommunityFirstCapitalTrustThreeMember" abstract="true" name="CommunityFirstCapitalTrustThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_DebtInstrumentsMaturityYear" abstract="false" name="DebtInstrumentsMaturityYear" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:gYearItemType"/>
  <xs:element id="ucbi_DebtInstrumentEarliestCallYear" abstract="false" name="DebtInstrumentEarliestCallYear" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:gYearItemType"/>
  <xs:element id="ucbi_FirstMiamiAndProgressMember" abstract="true" name="FirstMiamiAndProgressMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_SubleaseIncomeAndRentalIncomeFromOwnedPropertiesUnderOperatingLeases" abstract="false" name="SubleaseIncomeAndRentalIncomeFromOwnedPropertiesUnderOperatingLeases" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_MutualFundsFairValueDisclosure" abstract="false" name="MutualFundsFairValueDisclosure" 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_ContingentConsiderationReceivableMember" abstract="true" name="ContingentConsiderationReceivableMember" 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_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySalesAndSettlements" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySalesAndSettlements" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_ProbabilityOfAchievementMember" abstract="true" name="ProbabilityOfAchievementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_ContingentConsiderationReceivableMeasurementInput" abstract="false" name="ContingentConsiderationReceivableMeasurementInput" 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_MaximumRemainingMaturityOfFinancialInstrumentsHavingNoDefinedMaturity" abstract="false" name="MaximumRemainingMaturityOfFinancialInstrumentsHavingNoDefinedMaturity" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ucbi_UCBISeriesINonCumulativePreferredStockMember" abstract="true" name="UCBISeriesINonCumulativePreferredStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_SeriesINonCumulativePreferredStockMember" abstract="true" name="SeriesINonCumulativePreferredStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_DepositaryShares11000thOfPreferredShareMember" abstract="true" name="DepositaryShares11000thOfPreferredShareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ucbi_InterestPerOneShareOfPreferredStock" abstract="false" name="InterestPerOneShareOfPreferredStock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="ucbi_PerformanceBasedRestrictedStockUnitsMember" abstract="true" name="PerformanceBasedRestrictedStockUnitsMember" 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_EmployeeMember" abstract="true" name="EmployeeMember" 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_AccumulatedAmortizationOfGainsIncludedInNetIncomeOnAvailableForSaleSecuritiesTransferredToHeldToMaturityMember" abstract="true" name="AccumulatedAmortizationOfGainsIncludedInNetIncomeOnAvailableForSaleSecuritiesTransferredToHeldToMaturityMember" 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_AddDeductAbstract" abstract="true" name="AddDeductAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ucbi_IncomeTaxReconciliationBankOwnedLifeInsuranceEarnings" abstract="false" name="IncomeTaxReconciliationBankOwnedLifeInsuranceEarnings" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_IncomeTaxReconciliationChangeInReservesForUncertainTaxPositions" abstract="false" name="IncomeTaxReconciliationChangeInReservesForUncertainTaxPositions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_IncomeTaxReconciliationTaxTransactionCosts" abstract="false" name="IncomeTaxReconciliationTaxTransactionCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_IncomeTaxReconciliationBankOwnedLifeInsuranceSurrender" abstract="false" name="IncomeTaxReconciliationBankOwnedLifeInsuranceSurrender" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_IncomeTaxReconciliationFederalDepositInsuranceCorporationPremiumExpense" abstract="false" name="IncomeTaxReconciliationFederalDepositInsuranceCorporationPremiumExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_DeferredTaxAssetsLoanPurchaseAccountingAdjustment" abstract="false" name="DeferredTaxAssetsLoanPurchaseAccountingAdjustment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_DeferredTaxAssetsDeferredGainOnSBAUSDALoanSales" abstract="false" name="DeferredTaxAssetsDeferredGainOnSBAUSDALoanSales" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_DeferredTaxAssetsLeaseLiability" abstract="false" name="DeferredTaxAssetsLeaseLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_DeferredTaxLiabilitiesUnrealizedGainOnCashFlowHedge" abstract="false" name="DeferredTaxLiabilitiesUnrealizedGainOnCashFlowHedge" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_DeferredTaxLiabilitiesRightOfUseAssets" abstract="false" name="DeferredTaxLiabilitiesRightOfUseAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_DeferredTaxLiabilitiesSecuritiesPurchaseAccountingAdjustments" abstract="false" name="DeferredTaxLiabilitiesSecuritiesPurchaseAccountingAdjustments" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_DeferredTaxLiabilitiesBankOwnedLifeInsurance" abstract="false" name="DeferredTaxLiabilitiesBankOwnedLifeInsurance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_DeferredTaxLiabilitiesPreferredSecuritiesDebtIssuanceCosts" abstract="false" name="DeferredTaxLiabilitiesPreferredSecuritiesDebtIssuanceCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_DeferredTaxLiabilityUncertainTaxPositions" abstract="false" name="DeferredTaxLiabilityUncertainTaxPositions" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_NetOperatingLossCarryForwardsBeginToExpireIn2026Member" abstract="true" name="NetOperatingLossCarryForwardsBeginToExpireIn2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_NetOperatingLossCarryForwardsBeginToExpireIn2025Member" abstract="true" name="NetOperatingLossCarryForwardsBeginToExpireIn2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_NetOperatingLossCarryForwardsBeginToExpireIn2027Member" abstract="true" name="NetOperatingLossCarryForwardsBeginToExpireIn2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_ExecutiveOfficersCertainKeyEmployeesBoardOfDirectorsMember" abstract="true" name="ExecutiveOfficersCertainKeyEmployeesBoardOfDirectorsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ucbi_DefinedContributionPlanServicePeriodToQualifyForMatchingContributions" abstract="false" name="DefinedContributionPlanServicePeriodToQualifyForMatchingContributions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ucbi_DeferredCompensationArrangementWithIndividualDiscretionaryContributionsbyEmployer" abstract="false" name="DeferredCompensationArrangementWithIndividualDiscretionaryContributionsbyEmployer" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_CommonStockIssuableSharesUnderDeferredCompensationPlan" abstract="false" name="CommonStockIssuableSharesUnderDeferredCompensationPlan" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ucbi_ModifiedRetirementPlanMember" abstract="true" name="ModifiedRetirementPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_FintechAndOtherEquityMethodInvestmentsMember" abstract="true" name="FintechAndOtherEquityMethodInvestmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_InvestmentProgramProportionalAmortizationMethodElectedIncomeTaxCreditAndOtherIncomeTaxBenefitBeforeAmortizationStatementOfCashFlowsExtensibleEnumerationNotDisclosedFlag" abstract="false" name="InvestmentProgramProportionalAmortizationMethodElectedIncomeTaxCreditAndOtherIncomeTaxBenefitBeforeAmortizationStatementOfCashFlowsExtensibleEnumerationNotDisclosedFlag" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:booleanItemType"/>
  <xs:element id="ucbi_InvestmentProgramProportionalAmortizationMethodAppliedIncomeTaxCreditAndOtherTaxBenefitAmortizationStatementOfCashFlowsExtensibleEnumerationNotDisclosedFlag" abstract="false" name="InvestmentProgramProportionalAmortizationMethodAppliedIncomeTaxCreditAndOtherTaxBenefitAmortizationStatementOfCashFlowsExtensibleEnumerationNotDisclosedFlag" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:booleanItemType"/>
  <xs:element id="ucbi_InvestmentsInBank" abstract="false" name="InvestmentsInBank" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_DividendIncomeReceivedFromConsolidatedSubsidiariesBank" abstract="false" name="DividendIncomeReceivedFromConsolidatedSubsidiariesBank" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_DividendIncomeReceivedFromConsolidatedSubsidiariesOther" abstract="false" name="DividendIncomeReceivedFromConsolidatedSubsidiariesOther" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_SharedServiceFeesFromSubsidiaries" abstract="false" name="SharedServiceFeesFromSubsidiaries" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_CondensedIncomeStatementIncome" abstract="false" name="CondensedIncomeStatementIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_CondensedIncomeStatementTotalExpense" abstract="false" name="CondensedIncomeStatementTotalExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_IncomeLossBeforeEquityInUndistributedEarningsOfSubsidiaries" abstract="false" name="IncomeLossBeforeEquityInUndistributedEarningsOfSubsidiaries" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ucbi_PaymentsToAcquireAvailableForSaleSecuritiesDebtAndEquitySecurities" abstract="false" name="PaymentsToAcquireAvailableForSaleSecuritiesDebtAndEquitySecurities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_O2025Q1DividendsMember" abstract="true" name="O2025Q1DividendsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
