<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001898790</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001710482</issuerCik>
      <issuerName>John Marshall Bancorp, Inc.</issuerName>
      <secFileNumber>001-41315</secFileNumber>
      <issuerAddress>
        <com:street1>1943 ISAAC NEWTON SQUARE EAST</com:street1>
        <com:street2>SUITE 100</com:street2>
        <com:city>RESTON</com:city>
        <com:stateOrCountry>VA</com:stateOrCountry>
        <com:zipCode>20190</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>703-584-0840</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Nguonly Lim</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Charles Schwab Corp</name>
        <address>
          <com:street1>3000 Schwab Way</com:street1>
          <com:city>Westlake</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>76262</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>6000</noOfUnitsSold>
      <aggregateMarketValue>145680.00</aggregateMarketValue>
      <noOfUnitsOutstanding>14240213</noOfUnitsOutstanding>
      <approxSaleDate>11/19/2024</approxSaleDate>
      <securitiesExchangeName>Nasdaq</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>05/21/2008</acquiredDate>
      <natureOfAcquisitionTransaction>Open Market Purchase</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Open Market</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>21712</amountOfSecuritiesAcquired>
      <paymentDate>05/21/2008</paymentDate>
      <natureOfPayment>Cash</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>11/19/2024</noticeDate>
      <signature>Paul Lim Nguonly</signature>
    </noticeSignature>
  </formData>
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144
0001898790
XXXXXXXX
LIVE
0001710482
John Marshall Bancorp, Inc.
001-41315
1943 ISAAC NEWTON SQUARE EAST
SUITE 100
RESTON
VA
20190
703-584-0840
Nguonly Lim
Director
Common
Charles Schwab Corp
3000 Schwab Way
Westlake
TX
76262
6000
145680.00
14240213
11/19/2024
Nasdaq
Common
05/21/2008
Open Market Purchase
Open Market
N
21712
05/21/2008
Cash
Y
11/19/2024
Paul Lim Nguonly