    <SEC-DOCUMENT>0000707549-17-000177-index.html : 20171211
    <SEC-HEADER>0000707549-17-000177.hdr.sgml : 20171211
    <ACCEPTANCE-DATETIME>20171211160632
    ACCESSION NUMBER:		0000707549-17-000177
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		5
    CONFORMED PERIOD OF REPORT:	20171211
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20171211
    DATE AS OF CHANGE:		20171211

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			LAM RESEARCH CORP
    		CENTRAL INDEX KEY:			0000707549
    		STANDARD INDUSTRIAL CLASSIFICATION:	SPECIAL INDUSTRY MACHINERY, NEC [3559]
    		IRS NUMBER:				942634797
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			0625

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-12933
    		FILM NUMBER:		171249574

    	BUSINESS ADDRESS:
    		STREET 1:		4650 CUSHING BLVD
    		CITY:			FREMONT
    		STATE:			CA
    		ZIP:			94538
    		BUSINESS PHONE:		5106590200

    	MAIL ADDRESS:
    		STREET 1:		4650 CUSHING PARKWAY
    		CITY:			FREMONT
    		STATE:			CA
    		ZIP:			94538
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>lrcx_8-kxconversionrateadj.htm
    <DESCRIPTION>CONVERTIBLE BONDS CONVERSION RATE ADJUSTMENT
    <TEXT>
    Document 1 - file: lrcx_8-kxconversionrateadj.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>lrcx_exhibitx991x8kx12-17.htm
    <DESCRIPTION>NOTICE OF ADJ TO THE CONVERSION RATE FOR THE CONVERTIBLE SR. NOTES DUE 2018
    <TEXT>
    Document 2 - file: lrcx_exhibitx991x8kx12-17.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>lrcx_exhibitx992x8kx12-17.htm
    <DESCRIPTION>NOTICE OF ADJ TO THE CONVERSION RATE FOR THE SR. CONVERTIBLE NOTES DUE 2041
    <TEXT>
    Document 3 - file: lrcx_exhibitx992x8kx12-17.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>lamresearchlogocolora21.jpg
    <TEXT>
    Document 4 - file: lamresearchlogocolora21.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>lamresearchlogocolora22.jpg
    <TEXT>
    Document 5 - file: lamresearchlogocolora22.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>