<?xml version="1.0" encoding="utf-8"?>
<!--XBRL document created with Toppan Merrill Bridge  10.10.0.1 -->
<!--Based on XBRL 2.1-->
<!--Created on: 5/7/2025 6:45:53 PM-->
<!--Modified on: 5/7/2025 6:45:53 PM-->
<xsd:schema targetNamespace="http://aub.com/20250331" attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:deprecated="http://www.xbrl.org/2009/role/deprecated" xmlns:us-roles="http://fasb.org/us-roles/2024" xmlns:currency="http://xbrl.sec.gov/currency/2024" xmlns:ref="http://www.xbrl.org/2006/ref" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:us-types="http://fasb.org/us-types/2024" xmlns:srt-roles="http://fasb.org/srt-roles/2024" xmlns:utr="http://www.xbrl.org/2009/utr" xmlns:us-gaap="http://fasb.org/us-gaap/2024" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:stpr="http://xbrl.sec.gov/stpr/2024" xmlns:sic="http://xbrl.sec.gov/sic/2024" xmlns:srt-types="http://fasb.org/srt-types/2024" xmlns:enum2="http://xbrl.org/2020/extensible-enumerations-2.0" xmlns:country="http://xbrl.sec.gov/country/2024" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:naics="http://xbrl.sec.gov/naics/2024" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2022-03-31" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:exch="http://xbrl.sec.gov/exch/2024" xmlns:attributeFormDefault="unqualified" xmlns:srt="http://fasb.org/srt/2024" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dei="http://xbrl.sec.gov/dei/2024" xmlns:aub="http://aub.com/20250331" xmlns:dtr="http://www.xbrl.org/2009/dtr" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:us-gaap-ebp="http://fasb.org/us-gaap-ebp/2024" xmlns:cyd-af-sub="http://xbrl.sec.gov/cyd-af-sub/2024" xmlns:ecd="http://xbrl.sec.gov/ecd/2024" xmlns:ecd-sub="http://xbrl.sec.gov/ecd-sub/2024">
  <xsd:annotation>
    <xsd:appinfo>
      <link:roleType roleURI="http://aub.com/role/StatementConsolidatedBalanceSheets" id="StatementConsolidatedBalanceSheets">
        <link:definition>995200100 - Statement - CONSOLIDATED BALANCE SHEETS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/StatementConsolidatedStatementsOfIncomeUnaudited" id="StatementConsolidatedStatementsOfIncomeUnaudited">
        <link:definition>995200200 - Statement - CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/StatementConsolidatedStatementsOfComprehensiveIncomeLossUnaudited" id="StatementConsolidatedStatementsOfComprehensiveIncomeLossUnaudited">
        <link:definition>995200300 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" id="StatementConsolidatedStatementsOfCashFlowsUnaudited">
        <link:definition>995200500 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureAcquisitionsConsiderationTransferredDetails" id="DisclosureAcquisitionsConsiderationTransferredDetails">
        <link:definition>99940202 - Disclosure - ACQUISITIONS (Consideration Transferred) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSecuritiesAndOtherInvestmentsAmortizedCostGrossUnrealizedGainsAndLossesAndEstimatedFairValuesOfInvestmentSecuritiesDetails" id="DisclosureSecuritiesAndOtherInvestmentsAmortizedCostGrossUnrealizedGainsAndLossesAndEstimatedFairValuesOfInvestmentSecuritiesDetails">
        <link:definition>99940302 - Disclosure - SECURITIES AND OTHER INVESTMENTS (Amortized Cost, Gross Unrealized Gains and Losses, and Estimated Fair Values of Investment Securities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSecuritiesAndOtherInvestmentsScheduleOfGrossUnrealizedLossesAndFairValueOfInvestmentsDetails" id="DisclosureSecuritiesAndOtherInvestmentsScheduleOfGrossUnrealizedLossesAndFairValueOfInvestmentsDetails">
        <link:definition>99940303 - Disclosure - SECURITIES AND OTHER INVESTMENTS (Schedule of Gross Unrealized Losses and Fair Value of Investments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSecuritiesAndOtherInvestmentsScheduleOfAmortizedCostAndEstimatedFairValueOfSecuritiesDetails" id="DisclosureSecuritiesAndOtherInvestmentsScheduleOfAmortizedCostAndEstimatedFairValueOfSecuritiesDetails">
        <link:definition>99940304 - Disclosure - SECURITIES AND OTHER INVESTMENTS (Schedule of Amortized Cost and Estimated Fair Value of Securities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSecuritiesAndOtherInvestmentsScheduleOfCarryingValueGrossUnrealizedGainsAndLossesAndEstimatedFairValueOfSecuritiesDetails" id="DisclosureSecuritiesAndOtherInvestmentsScheduleOfCarryingValueGrossUnrealizedGainsAndLossesAndEstimatedFairValueOfSecuritiesDetails">
        <link:definition>99940306 - Disclosure - SECURITIES AND OTHER INVESTMENTS (Schedule of Carrying Value, Gross Unrealized Gains and Losses and Estimated Fair Value of Securities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSecuritiesAndOtherInvestmentsGrossRealizedGainsAndLossesOnSaleOfSecuritiesDetails" id="DisclosureSecuritiesAndOtherInvestmentsGrossRealizedGainsAndLossesOnSaleOfSecuritiesDetails">
        <link:definition>99940307 - Disclosure - SECURITIES AND OTHER INVESTMENTS (Gross Realized Gains and Losses on the Sale of Securities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLoansAndAllowanceForLoanAndLeaseLossesLoansReceivablesBasedOnDelinquencyStatusDetails" id="DisclosureLoansAndAllowanceForLoanAndLeaseLossesLoansReceivablesBasedOnDelinquencyStatusDetails">
        <link:definition>99940409 - Disclosure - LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Loans Receivables Based on Delinquency Status) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureGoodwillAndIntangibleAssetsEstimatedRemainingAmortizationExpenseOfIntangiblesDetails" id="DisclosureGoodwillAndIntangibleAssetsEstimatedRemainingAmortizationExpenseOfIntangiblesDetails">
        <link:definition>99940504 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Estimated Remaining Amortization Expense of Intangibles) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLeasesMaturitiesOfLessorAndLesseeArrangementsOutstandingDetailsAltCalc" id="DisclosureLeasesMaturitiesOfLessorAndLesseeArrangementsOutstandingDetailsAltCalc">
        <link:definition>40505 - Disclosure - LEASES (Maturities of Lessor and Lessee Arrangements Outstanding) (Details) (Alt Calc)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLeasesNetInvestmentInSalesTypeAndDirectFinancingLeaseDetails" id="DisclosureLeasesNetInvestmentInSalesTypeAndDirectFinancingLeaseDetails">
        <link:definition>99940602 - Disclosure - LEASES (Net Investment in Sales-Type and Direct Financing Lease) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureBorrowingsContractualMaturitiesOfLongTermDebtDetailsAlt" id="DisclosureBorrowingsContractualMaturitiesOfLongTermDebtDetailsAlt">
        <link:definition>40605 - Disclosure - BORROWINGS (Contractual Maturities of Long-Term Debt) (Details) (Alt)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLeasesLeaseCostInformationDetails" id="DisclosureLeasesLeaseCostInformationDetails">
        <link:definition>99940605 - Disclosure - LEASES (Lease Cost Information) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLeasesMaturitiesOfLessorAndLesseeArrangementsOutstandingDetails" id="DisclosureLeasesMaturitiesOfLessorAndLesseeArrangementsOutstandingDetails">
        <link:definition>99940606 - Disclosure - LEASES (Maturities of Lessor and Lessee Arrangements Outstanding) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureBorrowingsShortTermBorrowingsDetails" id="DisclosureBorrowingsShortTermBorrowingsDetails">
        <link:definition>99940701 - Disclosure - BORROWINGS (Short-Term Borrowings) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureBorrowingsLongTermBorrowingsDetails" id="DisclosureBorrowingsLongTermBorrowingsDetails">
        <link:definition>99940703 - Disclosure - BORROWINGS (Long-Term Borrowings) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureBorrowingsContractualMaturitiesOfLongTermDebtDetails" id="DisclosureBorrowingsContractualMaturitiesOfLongTermDebtDetails">
        <link:definition>99940704 - Disclosure - BORROWINGS (Contractual Maturities of Long-Term Debt) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureCommitmentsAndContingenciesScheduleOfSecuritiesPledgedAsCollateralDetails" id="DisclosureCommitmentsAndContingenciesScheduleOfSecuritiesPledgedAsCollateralDetails">
        <link:definition>99940803 - Disclosure - COMMITMENTS AND CONTINGENCIES (Schedule of Securities Pledged as Collateral) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureStockholdersEquityChangeInAccumulatedOtherComprehensiveIncomeDetails" id="DisclosureStockholdersEquityChangeInAccumulatedOtherComprehensiveIncomeDetails">
        <link:definition>99941002 - Disclosure - STOCKHOLDERS' EQUITY (Change in Accumulated Other Comprehensive Income) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureEarningsPerShareReconciliationOfDenominatorsOfBasicAndDilutedEpsDetails" id="DisclosureEarningsPerShareReconciliationOfDenominatorsOfBasicAndDilutedEpsDetails">
        <link:definition>99941301 - Disclosure - EARNINGS PER SHARE (Reconciliation of the Denominators of the Basic and Diluted EPS ) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSegmentReportingAndRevenueDisaggregationOfNoninterestIncomeByReportableOperatingSegmentDetails" id="DisclosureSegmentReportingAndRevenueDisaggregationOfNoninterestIncomeByReportableOperatingSegmentDetails">
        <link:definition>99941403 - Disclosure - SEGMENT REPORTING AND REVENUE (Disaggregation of Noninterest Income by Reportable Operating Segment) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DocumentDocumentAndEntityInformation" id="DocumentDocumentAndEntityInformation">
        <link:definition>995200090 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/StatementConsolidatedBalanceSheetsParenthetical" id="StatementConsolidatedBalanceSheetsParenthetical">
        <link:definition>995200105 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/StatementConsolidatedStatementsOfComprehensiveLossIncomeUnauditedParenthetical" id="StatementConsolidatedStatementsOfComprehensiveLossIncomeUnauditedParenthetical">
        <link:definition>995200305 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (UNAUDITED) (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/StatementConsolidatedStatementsOfChangesInStockholdersEquityUnaudited" id="StatementConsolidatedStatementsOfChangesInStockholdersEquityUnaudited">
        <link:definition>995200400 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/StatementConsolidatedStatementsOfChangesInStockholdersEquityUnauditedParenthetical" id="StatementConsolidatedStatementsOfChangesInStockholdersEquityUnauditedParenthetical">
        <link:definition>995200405 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSummaryOfSignificantAccountingPolicies" id="DisclosureSummaryOfSignificantAccountingPolicies">
        <link:definition>995210101 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureAcquisitions" id="DisclosureAcquisitions">
        <link:definition>995210201 - Disclosure - ACQUISITIONS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSecuritiesAndOtherInvestments" id="DisclosureSecuritiesAndOtherInvestments">
        <link:definition>995210301 - Disclosure - SECURITIES AND OTHER INVESTMENTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLoansAndAllowanceForLoanAndLeaseLosses" id="DisclosureLoansAndAllowanceForLoanAndLeaseLosses">
        <link:definition>995210401 - Disclosure - LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureGoodwillAndIntangibleAssets" id="DisclosureGoodwillAndIntangibleAssets">
        <link:definition>995210501 - Disclosure - GOODWILL AND INTANGIBLE ASSETS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLeases" id="DisclosureLeases">
        <link:definition>995210601 - Disclosure - LEASES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureBorrowings" id="DisclosureBorrowings">
        <link:definition>995210701 - Disclosure - BORROWINGS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureCommitmentsAndContingencies" id="DisclosureCommitmentsAndContingencies">
        <link:definition>995210801 - Disclosure - COMMITMENTS AND CONTINGENCIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureDerivatives" id="DisclosureDerivatives">
        <link:definition>995210901 - Disclosure - DERIVATIVES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureStockholdersEquity" id="DisclosureStockholdersEquity">
        <link:definition>995211001 - Disclosure - STOCKHOLDERS' EQUITY</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureFairValueMeasurements" id="DisclosureFairValueMeasurements">
        <link:definition>995211101 - Disclosure - FAIR VALUE MEASUREMENTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureIncomeTaxes" id="DisclosureIncomeTaxes">
        <link:definition>995211201 - Disclosure - INCOME TAXES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureEarningsPerShare" id="DisclosureEarningsPerShare">
        <link:definition>995211301 - Disclosure - EARNINGS PER SHARE</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSegmentReportingAndRevenue" id="DisclosureSegmentReportingAndRevenue">
        <link:definition>995211401 - Disclosure - SEGMENT REPORTING AND REVENUE</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSubsequentEvents" id="DisclosureSubsequentEvents">
        <link:definition>995215101 - Disclosure - SUBSEQUENT EVENTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies" id="DisclosureSummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>99920102 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureAcquisitionsTables" id="DisclosureAcquisitionsTables">
        <link:definition>99930203 - Disclosure - ACQUISITIONS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSecuritiesAndOtherInvestmentsTables" id="DisclosureSecuritiesAndOtherInvestmentsTables">
        <link:definition>99930303 - Disclosure - SECURITIES AND OTHER INVESTMENTS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLoansAndAllowanceForLoanAndLeaseLossesTables" id="DisclosureLoansAndAllowanceForLoanAndLeaseLossesTables">
        <link:definition>99930403 - Disclosure - LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureGoodwillAndIntangibleAssetsTables" id="DisclosureGoodwillAndIntangibleAssetsTables">
        <link:definition>99930503 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLeasesTables" id="DisclosureLeasesTables">
        <link:definition>99930603 - Disclosure - LEASES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureBorrowingsTables" id="DisclosureBorrowingsTables">
        <link:definition>99930703 - Disclosure - BORROWINGS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureCommitmentsAndContingenciesTables" id="DisclosureCommitmentsAndContingenciesTables">
        <link:definition>99930803 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureDerivativesTables" id="DisclosureDerivativesTables">
        <link:definition>99930903 - Disclosure - DERIVATIVES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureStockholdersEquityTables" id="DisclosureStockholdersEquityTables">
        <link:definition>99931003 - Disclosure - STOCKHOLDERS' EQUITY (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureFairValueMeasurementsTables" id="DisclosureFairValueMeasurementsTables">
        <link:definition>99931103 - Disclosure - FAIR VALUE MEASUREMENTS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureEarningsPerShareTables" id="DisclosureEarningsPerShareTables">
        <link:definition>99931303 - Disclosure - EARNINGS PER SHARE (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSegmentReportingAndRevenueTables" id="DisclosureSegmentReportingAndRevenueTables">
        <link:definition>99931403 - Disclosure - SEGMENT REPORTING AND REVENUE (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureAcquisitionsNarrativeDetails" id="DisclosureAcquisitionsNarrativeDetails">
        <link:definition>99940201 - Disclosure - ACQUISITIONS (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureAcquisitionsProFormaAmountsDetails" id="DisclosureAcquisitionsProFormaAmountsDetails">
        <link:definition>99940203 - Disclosure - ACQUISITIONS (Pro Forma Amounts) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSecuritiesAndOtherInvestmentsNarrativeDetails" id="DisclosureSecuritiesAndOtherInvestmentsNarrativeDetails">
        <link:definition>99940301 - Disclosure - SECURITIES AND OTHER INVESTMENTS (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSecuritiesAndOtherInvestmentsAmortizedCostOfHtmSecuritiesBySecurityTypeAndCreditRatingDetails" id="DisclosureSecuritiesAndOtherInvestmentsAmortizedCostOfHtmSecuritiesBySecurityTypeAndCreditRatingDetails">
        <link:definition>99940305 - Disclosure - SECURITIES AND OTHER INVESTMENTS (Amortized Cost of HTM Securities by Security Type and Credit Rating) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLoansAndAllowanceForLoanAndLeaseLossesNarrativeDetails" id="DisclosureLoansAndAllowanceForLoanAndLeaseLossesNarrativeDetails">
        <link:definition>99940401 - Disclosure - LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLoansAndAllowanceForLoanAndLeaseLossesScheduleOfStatedAtFaceAmountNetOfUnearnedIncomeDetails" id="DisclosureLoansAndAllowanceForLoanAndLeaseLossesScheduleOfStatedAtFaceAmountNetOfUnearnedIncomeDetails">
        <link:definition>99940402 - Disclosure - LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Schedule of Stated at Face Amount, Net of Unearned Income) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLoansAndAllowanceForLoanAndLeaseLossesScheduleOfAgingOfLoanPortfolioByClassDetails" id="DisclosureLoansAndAllowanceForLoanAndLeaseLossesScheduleOfAgingOfLoanPortfolioByClassDetails">
        <link:definition>99940403 - Disclosure - LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Schedule of Aging of the Loan Portfolio by Class) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLoansAndAllowanceForLoanAndLeaseLossesScheduleOfLoansOnNonaccrualStatusDetails" id="DisclosureLoansAndAllowanceForLoanAndLeaseLossesScheduleOfLoansOnNonaccrualStatusDetails">
        <link:definition>99940404 - Disclosure - LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Schedule of Loans on Nonaccrual Status) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLoansAndAllowanceForLoanAndLeaseLossesTroubledLoanModificationsDetails" id="DisclosureLoansAndAllowanceForLoanAndLeaseLossesTroubledLoanModificationsDetails">
        <link:definition>99940405 - Disclosure - LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Troubled Loan Modifications) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLoansAndAllowanceForLoanAndLeaseLossesScheduleForAllowanceForLoanLossActivityByPortfolioSegmentBalancesForAllowanceForCreditLossesAndLoansBasedOnImpairmentMethodologyDetails" id="DisclosureLoansAndAllowanceForLoanAndLeaseLossesScheduleForAllowanceForLoanLossActivityByPortfolioSegmentBalancesForAllowanceForCreditLossesAndLoansBasedOnImpairmentMethodologyDetails">
        <link:definition>99940406 - Disclosure - LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Schedule for Allowance for Loan Loss Activity, by Portfolio Segment, Balances for Allowance for Credit Losses, and Loans Based on Impairment Methodology) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLoansAndAllowanceForLoanAndLeaseLossesLoansReceivablesRelatedRiskRatingDetails" id="DisclosureLoansAndAllowanceForLoanAndLeaseLossesLoansReceivablesRelatedRiskRatingDetails">
        <link:definition>99940408 - Disclosure - LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Loans Receivables Related Risk Rating) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureGoodwillAndIntangibleAssetsNarrativeDetails" id="DisclosureGoodwillAndIntangibleAssetsNarrativeDetails">
        <link:definition>99940501 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureGoodwillAndIntangibleAssetsScheduleOfInformationConcerningIntangibleAssetsWithFiniteLifeDetails" id="DisclosureGoodwillAndIntangibleAssetsScheduleOfInformationConcerningIntangibleAssetsWithFiniteLifeDetails">
        <link:definition>99940502 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Schedule of Information Concerning Intangible Assets with Finite Life) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureGoodwillAndIntangibleAssetsScheduleOfGoodwillAndIntangibleAssetsByOperatingSegmentDetails" id="DisclosureGoodwillAndIntangibleAssetsScheduleOfGoodwillAndIntangibleAssetsByOperatingSegmentDetails">
        <link:definition>99940503 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Schedule of Goodwill and Intangible Assets by Operating Segment) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLeasesNarrativeDetails" id="DisclosureLeasesNarrativeDetails">
        <link:definition>99940601 - Disclosure - LEASES (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLeasesLesseeLeasePortfolioAndOtherSupplementalLeaseInformationDetails" id="DisclosureLeasesLesseeLeasePortfolioAndOtherSupplementalLeaseInformationDetails">
        <link:definition>99940603 - Disclosure - LEASES (Lessee Lease Portfolio and Other Supplemental Lease Information) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureLeasesOtherLeaseInformationDetails" id="DisclosureLeasesOtherLeaseInformationDetails">
        <link:definition>99940604 - Disclosure - LEASES (Other Lease Information) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureBorrowingsNarrativeDetails" id="DisclosureBorrowingsNarrativeDetails">
        <link:definition>99940702 - Disclosure - BORROWINGS (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails" id="DisclosureCommitmentsAndContingenciesNarrativeDetails">
        <link:definition>99940801 - Disclosure - COMMITMENTS AND CONTINGENCIES (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureCommitmentsAndContingenciesBalancesOfCommitmentsAndContingenciesDetails" id="DisclosureCommitmentsAndContingenciesBalancesOfCommitmentsAndContingenciesDetails">
        <link:definition>99940802 - Disclosure - COMMITMENTS AND CONTINGENCIES (Balances of Commitments and Contingencies) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureDerivativesSummaryOfDerivativesDetails" id="DisclosureDerivativesSummaryOfDerivativesDetails">
        <link:definition>99940901 - Disclosure - DERIVATIVES (Summary of the Derivatives) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureDerivativesSummaryOfCarryingValueOfCompanySHedgedAssetsInFairValueHedgesDetails" id="DisclosureDerivativesSummaryOfCarryingValueOfCompanySHedgedAssetsInFairValueHedgesDetails">
        <link:definition>99940902 - Disclosure - DERIVATIVES (Summary of the Carrying Value of the Company's Hedged Assets in Fair Value Hedges) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureStockholdersEquityNarrativeDetails" id="DisclosureStockholdersEquityNarrativeDetails">
        <link:definition>99941001 - Disclosure - STOCKHOLDERS' EQUITY (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureFairValueMeasurementsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" id="DisclosureFairValueMeasurementsScheduleOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails">
        <link:definition>99941101 - Disclosure - FAIR VALUE MEASUREMENTS (Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureFairValueMeasurementsCarryingValuesAndEstimatedFairValuesOfCompanySFinancialInstrumentsDetails" id="DisclosureFairValueMeasurementsCarryingValuesAndEstimatedFairValuesOfCompanySFinancialInstrumentsDetails">
        <link:definition>99941102 - Disclosure - FAIR VALUE MEASUREMENTS (Carrying Values and Estimated Fair Values of the Company's Financial Instruments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureIncomeTaxesNarrativeDetails" id="DisclosureIncomeTaxesNarrativeDetails">
        <link:definition>99941201 - Disclosure - INCOME TAXES (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSegmentReportingAndRevenueOperatingSegmentResultsDetails" id="DisclosureSegmentReportingAndRevenueOperatingSegmentResultsDetails">
        <link:definition>99941401 - Disclosure - SEGMENT REPORTING AND REVENUE (Operating Segment Results) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSegmentReportingAndRevenueDisaggregationOfNoninterestIncomeByMajorSourceDetails" id="DisclosureSegmentReportingAndRevenueDisaggregationOfNoninterestIncomeByMajorSourceDetails">
        <link:definition>99941402 - Disclosure - SEGMENT REPORTING AND REVENUE (Disaggregation of Noninterest Income by Major Source) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSegmentReportingAndRevenueDisaggregationOfNoninterestExpenseByReportableOperatingSegmentDetails" id="DisclosureSegmentReportingAndRevenueDisaggregationOfNoninterestExpenseByReportableOperatingSegmentDetails">
        <link:definition>99941404 - Disclosure - SEGMENT REPORTING AND REVENUE (Disaggregation of Noninterest Expense by Reportable Operating Segment) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://aub.com/role/DisclosureSubsequentEventsNarrativeDetails" id="DisclosureSubsequentEventsNarrativeDetails">
        <link:definition>99941501 - Disclosure - SUBSEQUENT EVENTS (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:linkbaseRef xlink:type="simple" xlink:href="aub-20250331_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="aub-20250331_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="aub-20250331_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="aub-20250331_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:roleType roleURI="http://aub.com/role/DisclosureStandardAndCustomAxisDomainDefaults" id="DisclosureStandardAndCustomAxisDomainDefaults">
        <link:definition>99900 - Disclosure - Standard And Custom Axis Domain Defaults</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:import namespace="https://xbrl.org/2023/calculation-1.1" schemaLocation="https://www.xbrl.org/2023/calculation-1.1.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/ecd/2024" schemaLocation="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2024" schemaLocation="https://xbrl.sec.gov/dei/2024/dei-2024.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2024" schemaLocation="https://xbrl.fasb.org/us-gaap/2024/elts/us-roles-2024.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/2022-03-31" schemaLocation="https://www.xbrl.org/dtr/type/2022-03-31/types.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://fasb.org/srt/2024" schemaLocation="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd" />
  <xsd:import namespace="http://fasb.org/us-gaap/2024" schemaLocation="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/ecd-sub/2024" schemaLocation="https://xbrl.sec.gov/ecd/2024/ecd-sub-2024.xsd" />
  <xsd:element name="BalancesOfCommitmentsAndContingenciesAbstract" id="aub_BalancesOfCommitmentsAndContingenciesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BankOwnedLifeInsuranceAbstract" id="aub_BankOwnedLifeInsuranceAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BankOwnedLifeInsuranceIncomeNetOfCashSettlements" id="aub_BankOwnedLifeInsuranceIncomeNetOfCashSettlements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="CashPaymentsAbstract" id="aub_CashPaymentsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommercialAndIndustrialMember" id="aub_CommercialAndIndustrialMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommercialRealEstateNonOwnerOccupiedMember" id="aub_CommercialRealEstateNonOwnerOccupiedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommercialRealEstateOwnerOccupiedMember" id="aub_CommercialRealEstateOwnerOccupiedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommitmentsAndContingenciesTableTextBlock" id="aub_CommitmentsAndContingenciesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommitmentsWithOffBalanceSheetRiskAbstract" id="aub_CommitmentsWithOffBalanceSheetRiskAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DepositsWithOtherFinancialInstitutions" id="aub_DepositsWithOtherFinancialInstitutions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="FederalFundsLinesAvailableBalance" id="aub_FederalFundsLinesAvailableBalance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LoanRelatedExpenses" id="aub_LoanRelatedExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFiveFairValueDiscountPremium" id="aub_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFiveFairValueDiscountPremium" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFiveGross" id="aub_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFiveGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFourFairValueDiscountPremium" id="aub_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFourFairValueDiscountPremium" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFourGross" id="aub_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFourGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThreeFairValueDiscountPremium" id="aub_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThreeFairValueDiscountPremium" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThreeGross" id="aub_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThreeGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwoFairValueDiscountPremium" id="aub_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwoFairValueDiscountPremium" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwoGross" id="aub_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwoGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="MatchingContributionAxis" id="aub_MatchingContributionAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MatchingContributionDomain" id="aub_MatchingContributionDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NetImpactOfAmortizationAndAccretionRelatedToAcquisition" id="aub_NetImpactOfAmortizationAndAccretionRelatedToAcquisition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="OtherCommercialMember" id="aub_OtherCommercialMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherComprehensiveIncomeAccretionOnUnrealizedGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturity" id="aub_OtherComprehensiveIncomeAccretionOnUnrealizedGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTransferredToHeldToMaturityNetOfTaxAbstract" id="aub_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTransferredToHeldToMaturityNetOfTaxAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherComprehensiveIncomeLossReclassificationAdjustmentFromBankOwnedLifeInsuranceDuringPeriodBeforeTax" id="aub_OtherComprehensiveIncomeLossReclassificationAdjustmentFromBankOwnedLifeInsuranceDuringPeriodBeforeTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="OtherPurposeMember" id="aub_OtherPurposeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TaxLawChangeAxis" id="aub_TaxLawChangeAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TaxLawChangeDomain" id="aub_TaxLawChangeDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TrustPreferredCapitalNotesMember" id="aub_TrustPreferredCapitalNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherLeaseInformationTableTextBlock" id="aub_OtherLeaseInformationTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OverdraftFeesNetMember" id="aub_OverdraftFeesNetMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MaintenanceFeesOtherMember" id="aub_MaintenanceFeesOtherMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TrustAssetManagementFeesMember" id="aub_TrustAssetManagementFeesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BrokerageManagementFeesNetMember" id="aub_BrokerageManagementFeesNetMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherComprehensiveIncomeUnrealizedHoldingGainLossOnBankOwnedLifeInsuranceArisingDuringPeriodNetOfTax" id="aub_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnBankOwnedLifeInsuranceArisingDuringPeriodNetOfTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="MFCCapitalTrustIIMember" id="aub_MFCCapitalTrustIIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StatutoryTrustOneMember" id="aub_StatutoryTrustOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StatutoryTrustTwoMember" id="aub_StatutoryTrustTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="VfgLimitedLiabilityTrustIIndentureMember" id="aub_VfgLimitedLiabilityTrustIIndentureMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FnbStatutoryTrustIiIndentureMember" id="aub_FnbStatutoryTrustIiIndentureMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GatewayCapitalStatutoryTrustIMember" id="aub_GatewayCapitalStatutoryTrustIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GatewayCapitalStatutoryTrustIIMember" id="aub_GatewayCapitalStatutoryTrustIIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GatewayCapitalStatutoryTrustIIIMember" id="aub_GatewayCapitalStatutoryTrustIIIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GatewayCapitalStatutoryTrustIVMember" id="aub_GatewayCapitalStatutoryTrustIVMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PaymentsToAcquireAvailableForSaleAndRestrictedStockSecurities" id="aub_PaymentsToAcquireAvailableForSaleAndRestrictedStockSecurities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfPledgedAssetsNotSeparatelyReportedOnStatementOfFinancialPositionTableTextBlock" id="aub_ScheduleOfPledgedAssetsNotSeparatelyReportedOnStatementOfFinancialPositionTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtSecuritiesAvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions" id="aub_DebtSecuritiesAvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="ProvisionForLoanLeaseAndOtherLossesIncludingDiscontinuedOperations" id="aub_ProvisionForLoanLeaseAndOtherLossesIncludingDiscontinuedOperations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ProceedsFromSaleOfAvailableForSaleSecuritiesAndRestrictedStock" id="aub_ProceedsFromSaleOfAvailableForSaleSecuritiesAndRestrictedStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="InterestRateSwapFeesOnLoans" id="aub_InterestRateSwapFeesOnLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonthsFairValueDiscountPremium" id="aub_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonthsFairValueDiscountPremium" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonthsGross" id="aub_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonthsGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="AccumulatedNetInvestmentGainLossTransferredToHeldToMaturityAttributableToParentMember" id="aub_AccumulatedNetInvestmentGainLossTransferredToHeldToMaturityAttributableToParentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="UnrealizedGainLossOnBankOwnedLifeInsuranceMember" id="aub_UnrealizedGainLossOnBankOwnedLifeInsuranceMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="Residential1To4FamilyCommercialMember" id="aub_Residential1To4FamilyCommercialMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="Residential1To4FamilyConsumerMember" id="aub_Residential1To4FamilyConsumerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="Residential1To4FamilyRevolvingMember" id="aub_Residential1To4FamilyRevolvingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYearGross" id="aub_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYearGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYearFairValueDiscountPremium" id="aub_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYearFairValueDiscountPremium" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="FinancingReceivablesInNonaccrualStatusMember" id="aub_FinancingReceivablesInNonaccrualStatusMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtSecuritiesAvailableForSaleNonaccrual" id="aub_DebtSecuritiesAvailableForSaleNonaccrual" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="MoodysAaaAaRatingMember" id="aub_MoodysAaaAaRatingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MoodySBbbBbBRatingMember" id="aub_MoodySBbbBbBRatingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MoodySNotRatedAgencyMember" id="aub_MoodySNotRatedAgencyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MoodySNotRatedNonAgencyMember" id="aub_MoodySNotRatedNonAgencyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ConsumerSegmentMember" id="aub_ConsumerSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SalesTypeAndDirectFinancingLeasesUnguaranteedResiduals" id="aub_SalesTypeAndDirectFinancingLeasesUnguaranteedResiduals" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="LessorSalesTypeAndDirectFinancingLeaseTermOfContract" id="aub_LessorSalesTypeAndDirectFinancingLeaseTermOfContract" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LeaseDisclosureTextBlock" id="aub_LeaseDisclosureTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LesseeLeasePortfolioAndOtherSupplementalLeaseInformation" id="aub_LesseeLeasePortfolioAndOtherSupplementalLeaseInformation" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MaturitiesOfLessorAndLesseeArrangementsOutstanding" id="aub_MaturitiesOfLessorAndLesseeArrangementsOutstanding" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NonAgencySecuritiesMember" id="aub_NonAgencySecuritiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfSharesToBePurchasedUponExerciseOfOptions" id="aub_NumberOfSharesToBePurchasedUponExerciseOfOptions" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="SimplifiedSupervisoryFormulaApproachRating" id="aub_SimplifiedSupervisoryFormulaApproachRating" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DepositarySharesMember" id="aub_DepositarySharesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfPreferredStockRepresentedByEachDepositaryShare" id="aub_NumberOfPreferredStockRepresentedByEachDepositaryShare" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InvestmentInTrustPreferredCapitalSecurities" id="aub_InvestmentInTrustPreferredCapitalSecurities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentOfPrincipalRemainderOfFiscalYear" id="aub_LongTermDebtMaturitiesRepaymentOfPrincipalRemainderOfFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentOfPrincipalInYearTwo" id="aub_LongTermDebtMaturitiesRepaymentOfPrincipalInYearTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentOfPrincipalInYearThree" id="aub_LongTermDebtMaturitiesRepaymentOfPrincipalInYearThree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentOfPrincipalInYearFour" id="aub_LongTermDebtMaturitiesRepaymentOfPrincipalInYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentOfPrincipalAfterYearFive" id="aub_LongTermDebtMaturitiesRepaymentOfPrincipalAfterYearFive" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="WatchMember" id="aub_WatchMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LongTermDebtMaturitiesRepaymentOfPrincipalInNextTwelveMonths" id="aub_LongTermDebtMaturitiesRepaymentOfPrincipalInNextTwelveMonths" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="FinancingReceivablePercentCurrent" id="aub_FinancingReceivablePercentCurrent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="FinancingReceivablePercentGreaterThan90DaysAndStillAccruing" id="aub_FinancingReceivablePercentGreaterThan90DaysAndStillAccruing" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="LoansAndLeasesReceivableNetOfDeferredIncomePercentage" id="aub_LoansAndLeasesReceivableNetOfDeferredIncomePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="FinancingCashFlowsFromFinanceLeases" id="aub_FinancingCashFlowsFromFinanceLeases" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="SalesTypeAndDirectFinancingLeaseNetInvestmentTableTextBlock" id="aub_SalesTypeAndDirectFinancingLeaseNetInvestmentTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FeesAndCommissionsDepositAccounts" id="aub_FeesAndCommissionsDepositAccounts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="OtherServiceChargesCommissionsAndFees" id="aub_OtherServiceChargesCommissionsAndFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="InterchangeFeesNet" id="aub_InterchangeFeesNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="AssetManagementFees" id="aub_AssetManagementFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="IssuanceOfCommonStockUnderEquityCompensationPlansForServicesRenderedAndVestingOfRestrictedStockNetOfSharesHeldForTaxes" id="aub_IssuanceOfCommonStockUnderEquityCompensationPlansForServicesRenderedAndVestingOfRestrictedStockNetOfSharesHeldForTaxes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="LesseeOperatingLeaseLiabilityToBePaidYearFiveAndAfterYearFive" id="aub_LesseeOperatingLeaseLiabilityToBePaidYearFiveAndAfterYearFive" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="SalesTypeAndDirectFinancingLeasesLeaseReceivableToBeReceivedYearFiveAndAfterYearFive" id="aub_SalesTypeAndDirectFinancingLeasesLeaseReceivableToBeReceivedYearFiveAndAfterYearFive" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="FinanceLeaseLiabilityToBePaidYearFiveAndAfterYearFive" id="aub_FinanceLeaseLiabilityToBePaidYearFiveAndAfterYearFive" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="SubordinateDebt2031Member" id="aub_SubordinateDebt2031Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RestrictedEquitySecuritiesAsPercentageOfOutstandingBorrowingsRequiredByFederalHomeLoanBank" id="aub_RestrictedEquitySecuritiesAsPercentageOfOutstandingBorrowingsRequiredByFederalHomeLoanBank" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="RestrictedEquitySecuritiesAsPercentageOfOutstandingBorrowingsRequiredByFederalReserveBank" id="aub_RestrictedEquitySecuritiesAsPercentageOfOutstandingBorrowingsRequiredByFederalReserveBank" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="MultifamilyRealEstateMember" id="aub_MultifamilyRealEstateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear" id="aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear" id="aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear" id="aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="FinancingReceivableAndNetinvestmentInLeaseExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear" id="aub_FinancingReceivableAndNetinvestmentInLeaseExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear" id="aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseAllowanceForCreditLossExcludingAccruedInterest" id="aub_FinancingReceivableAndNetInvestmentInLeaseAllowanceForCreditLossExcludingAccruedInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseNonaccrualNoAllowance" id="aub_FinancingReceivableAndNetInvestmentInLeaseNonaccrualNoAllowance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear" id="aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseRecordedInvestment90DaysPastDueAndStillAccruing" id="aub_FinancingReceivableAndNetInvestmentInLeaseRecordedInvestment90DaysPastDueAndStillAccruing" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseRecordedInvestmentNonaccrualStatus" id="aub_FinancingReceivableAndNetInvestmentInLeaseRecordedInvestmentNonaccrualStatus" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseBeforeAllowanceForCreditLoss" id="aub_FinancingReceivableAndNetInvestmentInLeaseBeforeAllowanceForCreditLoss" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="SegmentReportingAndRevenueFromContractWithCustomerTextBlock" id="aub_SegmentReportingAndRevenueFromContractWithCustomerTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="WholesaleBankingSegmentMember" id="aub_WholesaleBankingSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ConsumerBankingSegmentMember" id="aub_ConsumerBankingSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ExtendedMaturityAndContractualInterestRateReductionMember" id="aub_ExtendedMaturityAndContractualInterestRateReductionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FinancingReceivableTroubledDebtRestructuringWeightedAverageInterestRatePreModification" id="aub_FinancingReceivableTroubledDebtRestructuringWeightedAverageInterestRatePreModification" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="FinancingReceivableTroubledDebtRestructuringWeightedAverageInterestRatePostModification" id="aub_FinancingReceivableTroubledDebtRestructuringWeightedAverageInterestRatePostModification" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteOffs" id="aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteOffs" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteOffs" id="aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteOffs" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteOffs" id="aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteOffs" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteOffs" id="aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteOffs" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteOffs" id="aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteOffs" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteOffs" id="aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteOffs" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="FinancingReceivableExcludingAccruedInterestRevolvingWirteOffs" id="aub_FinancingReceivableExcludingAccruedInterestRevolvingWirteOffs" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="AllowanceForLoanAndLeaseLossesAggregateWriteOffs" id="aub_AllowanceForLoanAndLeaseLossesAggregateWriteOffs" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="TroubledLoanModificationsMember" id="aub_TroubledLoanModificationsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SummaryOfFinancialEffectsOfTroubledLoanModificationsWithinLoanTypeTableTextBlock" id="aub_SummaryOfFinancialEffectsOfTroubledLoanModificationsWithinLoanTypeTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ScheduleOfDebtInvestmentsTable" id="aub_ScheduleOfDebtInvestmentsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ScheduleOfDebtInvestmentsLineItems" id="aub_ScheduleOfDebtInvestmentsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AvailableForSaleDebtSecuritiesMember" id="aub_AvailableForSaleDebtSecuritiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DebtSecuritiesHeldToMaturityMember" id="aub_DebtSecuritiesHeldToMaturityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount" id="aub_FinancingReceivableAndNetInvestmentInLeaseUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestBeforeAllowanceForCreditLoss" id="aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestBeforeAllowanceForCreditLoss" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestAfterAllowanceForCreditLoss" id="aub_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestAfterAllowanceForCreditLoss" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ProvisionForLoanLeaseAndOtherLossesOperating" id="aub_ProvisionForLoanLeaseAndOtherLossesOperating" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="AmericanNationalMember" id="aub_AmericanNationalMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ScheduleOfSegmentReportingInformationBySegmentBalanceSheetMetricsTableTextBlock" id="aub_ScheduleOfSegmentReportingInformationBySegmentBalanceSheetMetricsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DisaggregationOfRevenueTableBySegmentTableTextBlock" id="aub_DisaggregationOfRevenueTableBySegmentTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="OtherThanInsignificantPaymentDelayAndTermExtensionMember" id="aub_OtherThanInsignificantPaymentDelayAndTermExtensionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FhlbSecuredLineOfCreditMember" id="aub_FhlbSecuredLineOfCreditMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SecuritiesMember" id="aub_SecuritiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CompanyInformationPolicyTextBlock" id="aub_CompanyInformationPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ImpairmentLossOtherThanTemporaryDebtSecuritiesAvailableForSale" id="aub_ImpairmentLossOtherThanTemporaryDebtSecuritiesAvailableForSale" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="FinancingReceivableAccruedInterestAfterAllowanceForCreditLossStatementOfFinancialPositionExtensibleListNotDisclosedFlag" id="aub_FinancingReceivableAccruedInterestAfterAllowanceForCreditLossStatementOfFinancialPositionExtensibleListNotDisclosedFlag" type="xbrli:booleanItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="PaymentsForProceedsFromOtherInvestments" id="aub_PaymentsForProceedsFromOtherInvestments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="TroubledLoanModificationsDefaulted" id="aub_TroubledLoanModificationsDefaulted" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="TroubledLoanModificationsPastDue" id="aub_TroubledLoanModificationsPastDue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DepositsWithOtherFinancialInstitutionsServesAsCollateralForCashFlowHedgeFairValueHedgeAndLoanSwapDerivatives" id="aub_DepositsWithOtherFinancialInstitutionsServesAsCollateralForCashFlowHedgeFairValueHedgeAndLoanSwapDerivatives" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansHeldForSale" id="aub_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansHeldForSale" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansHeldForInvestment" id="aub_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansHeldForInvestment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeposits" id="aub_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeposits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="AmnbTrustIMember" id="aub_AmnbTrustIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MidcarolinaTrustIMember" id="aub_MidcarolinaTrustIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NumberOfBranchesAcquired" id="aub_NumberOfBranchesAcquired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="BusinessCombinationConversionOfStockRatio" id="aub_BusinessCombinationConversionOfStockRatio" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBankOwnedLifeInsurance" id="aub_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBankOwnedLifeInsurance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="MidcarolinaTrustIIMember" id="aub_MidcarolinaTrustIIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BusinessAcquisitionProFormaNetIncomeLossAvailableToCommonShareholders" id="aub_BusinessAcquisitionProFormaNetIncomeLossAvailableToCommonShareholders" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="CashCollateralMember" id="aub_CashCollateralMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SandySpringMember" id="aub_SandySpringMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MorganStanleyCo.LlcMember" id="aub_MorganStanleyCo.LlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="UnderwriterGrantedOptionPeriod" id="aub_UnderwriterGrantedOptionPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ShareRepurchaseProgramNumberOfActiveShareRepurchasePrograms" id="aub_ShareRepurchaseProgramNumberOfActiveShareRepurchasePrograms" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="DisaggregationOfNoninterestExpenseTableBySegmentTableTextBlock" id="aub_DisaggregationOfNoninterestExpenseTableBySegmentTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DisaggregationOfNoninterestExpensesTable" id="aub_DisaggregationOfNoninterestExpensesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DisaggregationOfNoninterestExpensesLineItems" id="aub_DisaggregationOfNoninterestExpensesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OtherNoninterestAndAllocatedExpenses" id="aub_OtherNoninterestAndAllocatedExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="CorporateAndEliminationsMember" id="aub_CorporateAndEliminationsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FederalReserveDiscountWindowMaximumBorrowingCapacity" id="aub_FederalReserveDiscountWindowMaximumBorrowingCapacity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="FederalReserveDiscountWindowBorrowingsAmountOfUsedFunds" id="aub_FederalReserveDiscountWindowBorrowingsAmountOfUsedFunds" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ReallocationOfLoansHeldForInvestment" id="aub_ReallocationOfLoansHeldForInvestment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ReallocationOfDeposits" id="aub_ReallocationOfDeposits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="Loans" id="aub_Loans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="O2025Q2CommonDividendsMember" id="aub_O2025Q2CommonDividendsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="O2025Q2PreferredDividendsMember" id="aub_O2025Q2PreferredDividendsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
</xsd:schema>
