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    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001812083</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>


    </filerInfo>
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    <issuerInfo>
      <issuerCik>0000073309</issuerCik>
      <issuerName>NUCOR CORP</issuerName>
      <secFileNumber>001-04119</secFileNumber>
      <issuerAddress>
        <com:street1>1915 REXFORD RD</com:street1>
        <com:city>CHARLOTTE</com:city>
        <com:stateOrCountry>NC</com:stateOrCountry>
        <com:zipCode>28211</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>7043667000</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Behr Allen C</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</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>8000</noOfUnitsSold>
      <aggregateMarketValue>1372856.98</aggregateMarketValue>
      <noOfUnitsOutstanding>251222908</noOfUnitsOutstanding>
      <approxSaleDate>08/03/2023</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>08/03/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Option Granted - 06/01/2020</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>8000</amountOfSecuritiesAcquired>
      <paymentDate>08/03/2023</paymentDate>
      <natureOfPayment>Cash</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>ALLEN BEHR</name>
        <address>
          <com:street1>1915 Rexford Road</com:street1>
          <com:city>Charlotte</com:city>
          <com:stateOrCountry>NC</com:stateOrCountry>
          <com:zipCode>28211</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/02/2023</saleDate>
      <amountOfSecuritiesSold>10000</amountOfSecuritiesSold>
      <grossProceeds>1705433.43</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>08/03/2023</noticeDate>
      <signature>/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Allen Behr</signature>
    </noticeSignature>
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144
0001812083
XXXXXXXX
LIVE
0000073309
NUCOR CORP
001-04119
1915 REXFORD RD
CHARLOTTE
NC
28211
7043667000
Behr Allen C
Officer
Common
Fidelity Brokerage Services LLC
900 Salem Street
Smithfield
RI
02917
8000
1372856.98
251222908
08/03/2023
NYSE
Common
08/03/2023
Option Granted - 06/01/2020
Issuer
N
8000
08/03/2023
Cash
N
ALLEN BEHR
1915 Rexford Road
Charlotte
NC
28211
Common
08/02/2023
10000
1705433.43
08/03/2023
/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Allen Behr