content: <?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>0001659312</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0001856525</issuerCik>
        <issuerName>Core &amp; Main, Inc.</issuerName>
        <secFileNumber>001-40650</secFileNumber>
        <issuerAddress>
          <com:street1>1830 CRAIG PARK COURT</com:street1>
          <com:city>ST. LOUIS</com:city>
          <com:stateOrCountry>MO</com:stateOrCountry>
          <com:zipCode>63146</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>314-432-4700</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>LeClair Stephen O</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
          <relationshipToIssuer>Director</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Fidelity Brokerage Services LLC</name>
          <address>
            <com:street1>900 Salem Street</com:street1>
            <com:city>Smithfield</com:city>
            <com:stateOrCountry>RI</com:stateOrCountry>
            <com:zipCode>02917</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>44972</noOfUnitsSold>
        <aggregateMarketValue>2784411.63</aggregateMarketValue>
        <noOfUnitsOutstanding>189654473</noOfUnitsOutstanding>
        <approxSaleDate>07/07/2025</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <acquiredDate>07/07/2025</acquiredDate>
        <natureOfAcquisitionTransaction>Option Granted - 03/11/2022</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>44972</amountOfSecuritiesAcquired>
        <paymentDate>07/07/2025</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Stephen Leclair</name>
          <address>
            <com:street1>1830 Craig Park Court</com:street1>
            <com:city>St. Louis</com:city>
            <com:stateOrCountry>MO</com:stateOrCountry>
            <com:zipCode>63146</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <saleDate>07/03/2025</saleDate>
        <amountOfSecuritiesSold>80028</amountOfSecuritiesSold>
        <grossProceeds>4983127.48</grossProceeds>
      </securitiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>07/07/2025</noticeDate>
        <signature>/s/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Stephen Leclair</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
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text: 144
  0001659312
  XXXXXXXX
  LIVE
  0001856525
  Core & Main, Inc.
  001-40650
  1830 CRAIG PARK COURT
  ST. LOUIS
  MO
  63146
  314-432-4700
  LeClair Stephen O
  Officer
  Director
  Class A
  Fidelity Brokerage Services LLC
  900 Salem Street
  Smithfield
  RI
  02917
  44972
  2784411.63
  189654473
  07/07/2025
  NYSE
  Class A
  07/07/2025
  Option Granted - 03/11/2022
  Issuer
  N
  44972
  07/07/2025
  Cash
  N
  Stephen Leclair
  1830 Craig Park Court
  St. Louis
  MO
  63146
  Class A
  07/03/2025
  80028
  4983127.48
  07/07/2025
  /s/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Stephen Leclair