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            <ccc>XXXXXXXX</ccc>
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        <liveTestFlag>LIVE</liveTestFlag>
  
  
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      <issuerInfo>
        <issuerCik>0000916076</issuerCik>
        <issuerName>MARTIN MARIETTA MATERIALS INC</issuerName>
        <secFileNumber>001-12744</secFileNumber>
        <issuerAddress>
          <com:street1>4123 PARKLAKE AVE</com:street1>
          <com:city>RALEIGH</com:city>
          <com:stateOrCountry>NC</com:stateOrCountry>
          <com:zipCode>27612</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>919-781-4550</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Nye C Howard</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
          <relationshipToIssuer>Director</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Martin Marietta Materials, Inc.</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>J.P. Morgan Securities LLC</name>
          <address>
            <com:street1>390 Madison Avenue 6th Floorr</com:street1>
            <com:city>New York</com:city>
            <com:stateOrCountry>NY</com:stateOrCountry>
            <com:zipCode>10017</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>20000</noOfUnitsSold>
        <aggregateMarketValue>12038000.00</aggregateMarketValue>
        <noOfUnitsOutstanding>61822465</noOfUnitsOutstanding>
        <approxSaleDate>03/05/2024</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>02/20/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting and Distribution of of Restricted Stock Units (shares held in Irrevocable Trust</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Martin Marietta Materials, Inc.</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>847</amountOfSecuritiesAcquired>
        <paymentDate>02/20/2024</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>02/20/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting and Distribution of Restricted Stock Units (shares held in Irrevocable Trust)</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Martin Marietta Materials, Inc.</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>1793</amountOfSecuritiesAcquired>
        <paymentDate>02/20/2024</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>02/21/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting and Distribution of Performance Share Units (shares held in Irrevocable Trust)</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Martin Marietta Materials, Inc.</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>2360</amountOfSecuritiesAcquired>
        <paymentDate>02/21/2024</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>02/21/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting and Distribution of Performance Share Units</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Martin Marietta Materials, Inc.</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>13425</amountOfSecuritiesAcquired>
        <paymentDate>02/21/2024</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>02/26/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting and Distribution of Restricted Stock Units</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Martin Marietta Materials, Inc.</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>1575</amountOfSecuritiesAcquired>
        <paymentDate>02/26/2024</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>03/05/2024</noticeDate>
        <signature>Roselyn R. Bar, Attorney-in-Fact</signature>
      </noticeSignature>
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text: 144
  0001373147
  XXXXXXXX
  LIVE
  0000916076
  MARTIN MARIETTA MATERIALS INC
  001-12744
  4123 PARKLAKE AVE
  RALEIGH
  NC
  27612
  919-781-4550
  Nye C Howard
  Officer
  Director
  Martin Marietta Materials, Inc.
  J.P. Morgan Securities LLC
  390 Madison Avenue 6th Floorr
  New York
  NY
  10017
  20000
  12038000.00
  61822465
  03/05/2024
  NYSE
  Common Stock
  02/20/2024
  Vesting and Distribution of of Restricted Stock Units (shares held in Irrevocable Trust
  Martin Marietta Materials, Inc.
  N
  847
  02/20/2024
  Cash
  Common Stock
  02/20/2024
  Vesting and Distribution of Restricted Stock Units (shares held in Irrevocable Trust)
  Martin Marietta Materials, Inc.
  N
  1793
  02/20/2024
  Cash
  Common Stock
  02/21/2024
  Vesting and Distribution of Performance Share Units (shares held in Irrevocable Trust)
  Martin Marietta Materials, Inc.
  N
  2360
  02/21/2024
  Cash
  Common Stock
  02/21/2024
  Vesting and Distribution of Performance Share Units
  Martin Marietta Materials, Inc.
  N
  13425
  02/21/2024
  Cash
  Common Stock
  02/26/2024
  Vesting and Distribution of Restricted Stock Units
  Martin Marietta Materials, Inc.
  N
  1575
  02/26/2024
  Cash
  Y
  03/05/2024
  Roselyn R. Bar, Attorney-in-Fact