    <SEC-DOCUMENT>0000707549-18-000066-index.html : 20180312
    <SEC-HEADER>0000707549-18-000066.hdr.sgml : 20180312
    <ACCEPTANCE-DATETIME>20180312160250
    ACCESSION NUMBER:		0000707549-18-000066
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		5
    CONFORMED PERIOD OF REPORT:	20180312
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20180312
    DATE AS OF CHANGE:		20180312

    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:		18683382

    	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>8-K
    <TEXT>
    Document 1 - file: lrcx_8-kxconversionrateadj.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>lrcx_exhibitx991x8kx3-12.htm
    <DESCRIPTION>EXHIBIT 99.1
    <TEXT>
    Document 2 - file: lrcx_exhibitx991x8kx3-12.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>lrcx_exhibitx992x8kx3-12.htm
    <DESCRIPTION>EXHIBIT 99.2
    <TEXT>
    Document 3 - file: lrcx_exhibitx992x8kx3-12.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>lamresearchlogocolora23.jpg
    <TEXT>
    Document 4 - file: lamresearchlogocolora23.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>lamresearchlogocolora25.jpg
    <TEXT>
    Document 5 - file: lamresearchlogocolora25.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>