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            <ccc>XXXXXXXX</ccc>
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        <liveTestFlag>LIVE</liveTestFlag>
  
  
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        <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>BAR ROSELYN R</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Martin Marietta Materials, Inc.</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>J.P. Morgan Securities LLC</name>
          <address>
            <com:street1>390 Madison Avenue</com:street1>
            <com:street2>6th Floor</com:street2>
            <com:city>New York</com:city>
            <com:stateOrCountry>NY</com:stateOrCountry>
            <com:zipCode>10017</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>10000</noOfUnitsSold>
        <aggregateMarketValue>6049200.00</aggregateMarketValue>
        <noOfUnitsOutstanding>61822465</noOfUnitsOutstanding>
        <approxSaleDate>03/13/2024</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
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        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>02/19/2021</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting and Distribution of Restricted Stock Units</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Martin Marietta Materials, Inc.</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>294</amountOfSecuritiesAcquired>
        <paymentDate>02/19/2021</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>02/22/2021</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting and Distribution of Restricted Stock Units</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Martin Marietta Materials, Inc.</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>790</amountOfSecuritiesAcquired>
        <paymentDate>02/22/2021</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>02/17/2021</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting and Distribution of Performance Share Units</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Martin Marietta Materials, Inc.</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>608</amountOfSecuritiesAcquired>
        <paymentDate>02/17/2021</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>02/14/2022</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting and Distribution of Performance Share Units</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Martin Marietta Materials, Inc.</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>3579</amountOfSecuritiesAcquired>
        <paymentDate>02/14/2022</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>02/17/2022</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting and Distribution of Restricted Stock</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Martin Marietta Materials, Inc.</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>258</amountOfSecuritiesAcquired>
        <paymentDate>02/17/2022</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>02/22/2022</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting and Distribution of Common Stock</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Martin Marietta Materials, Inc.</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>777</amountOfSecuritiesAcquired>
        <paymentDate>02/22/2022</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>12/01/2022</acquiredDate>
        <natureOfAcquisitionTransaction>Distribution of Stock Units Awarded Pursuant to the Martin Marietta Materials, Inc. Incentive Stock Plan</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Martin Marietta Materials, Inc.</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>690</amountOfSecuritiesAcquired>
        <paymentDate>12/01/2022</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>02/17/2023</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting and Distribution of Restricted Stock Units</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Martin Marietta Materials, Inc.</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>285</amountOfSecuritiesAcquired>
        <paymentDate>02/17/2023</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>02/21/2023</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting and Distribution of Restricted Stock Units</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Martin Marietta Materials, Inc.</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>573</amountOfSecuritiesAcquired>
        <paymentDate>02/21/2023</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>02/21/2023</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting and Distribution of Performance Share Units</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Martin Marietta Materials, Inc.</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>2146</amountOfSecuritiesAcquired>
        <paymentDate>02/21/2023</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>03/14/2024</noticeDate>
        <signature>Roselyn R. Bar</signature>
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text: 144
  0001164744
  XXXXXXXX
  LIVE
  0000916076
  MARTIN MARIETTA MATERIALS INC
  001-12744
  4123 PARKLAKE AVE
  RALEIGH
  NC
  27612
  919-781-4550
  BAR ROSELYN R
  Officer
  Martin Marietta Materials, Inc.
  J.P. Morgan Securities LLC
  390 Madison Avenue
  6th Floor
  New York
  NY
  10017
  10000
  6049200.00
  61822465
  03/13/2024
  NYSE
  Common Stock
  02/19/2021
  Vesting and Distribution of Restricted Stock Units
  Martin Marietta Materials, Inc.
  N
  294
  02/19/2021
  Cash
  Common Stock
  02/22/2021
  Vesting and Distribution of Restricted Stock Units
  Martin Marietta Materials, Inc.
  N
  790
  02/22/2021
  Cash
  Common Stock
  02/17/2021
  Vesting and Distribution of Performance Share Units
  Martin Marietta Materials, Inc.
  N
  608
  02/17/2021
  Cash
  Common Stock
  02/14/2022
  Vesting and Distribution of Performance Share Units
  Martin Marietta Materials, Inc.
  N
  3579
  02/14/2022
  Cash
  Common Stock
  02/17/2022
  Vesting and Distribution of Restricted Stock
  Martin Marietta Materials, Inc.
  N
  258
  02/17/2022
  Cash
  Common Stock
  02/22/2022
  Vesting and Distribution of Common Stock
  Martin Marietta Materials, Inc.
  N
  777
  02/22/2022
  Cash
  Common Stock
  12/01/2022
  Distribution of Stock Units Awarded Pursuant to the Martin Marietta Materials, Inc. Incentive Stock Plan
  Martin Marietta Materials, Inc.
  N
  690
  12/01/2022
  Cash
  Common Stock
  02/17/2023
  Vesting and Distribution of Restricted Stock Units
  Martin Marietta Materials, Inc.
  N
  285
  02/17/2023
  Cash
  Common Stock
  02/21/2023
  Vesting and Distribution of Restricted Stock Units
  Martin Marietta Materials, Inc.
  N
  573
  02/21/2023
  Cash
  Common Stock
  02/21/2023
  Vesting and Distribution of Performance Share Units
  Martin Marietta Materials, Inc.
  N
  2146
  02/21/2023
  Cash
  Y
  03/14/2024
  Roselyn R. Bar