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    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001316065</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0000707549</issuerCik>
      <issuerName>LAM RESEARCH CORP</issuerName>
      <secFileNumber>000-12933</secFileNumber>
      <issuerAddress>
        <com:street1>4650 CUSHING BLVD</com:street1>
        <com:city>FREMONT</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>94538</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>5106590200</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>TALWALKAR ABHIJIT Y</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</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>881</noOfUnitsSold>
      <aggregateMarketValue>461723.29</aggregateMarketValue>
      <noOfUnitsOutstanding>134936209</noOfUnitsOutstanding>
      <approxSaleDate>04/03/2023</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>10/31/2018</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>441</amountOfSecuritiesAcquired>
      <paymentDate>10/31/2018</paymentDate>
      <natureOfPayment>Compensation</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>10/31/2021</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>440</amountOfSecuritiesAcquired>
      <paymentDate>10/31/2021</paymentDate>
      <natureOfPayment>Compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>ABHI TALWALKAR</name>
        <address>
          <com:street1>4650 Cushing Parkway</com:street1>
          <com:city>Fremont</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94538</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>01/03/2023</saleDate>
      <amountOfSecuritiesSold>880</amountOfSecuritiesSold>
      <grossProceeds>378153.60</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>04/03/2023</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>10/25/2022</planAdoptionDate>
      </planAdoptionDates>
      <signature>/s/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Abhi Talwalkar</signature>
    </noticeSignature>
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144
0001316065
XXXXXXXX
LIVE
0000707549
LAM RESEARCH CORP
000-12933
4650 CUSHING BLVD
FREMONT
CA
94538
5106590200
TALWALKAR ABHIJIT Y
Director
Common
Fidelity Brokerage Services LLC
900 Salem Street
Smithfield
RI
02917
881
461723.29
134936209
04/03/2023
NASDAQ
Common
10/31/2018
Restricted Stock Vesting
Issuer
N
441
10/31/2018
Compensation
Common
10/31/2021
Restricted Stock Vesting
Issuer
N
440
10/31/2021
Compensation
N
ABHI TALWALKAR
4650 Cushing Parkway
Fremont
CA
94538
Common
01/03/2023
880
378153.60
04/03/2023
10/25/2022
/s/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Abhi Talwalkar