<SEC-DOCUMENT>0001193125-18-186795-index.html : 20180607
<SEC-HEADER>0001193125-18-186795.hdr.sgml : 20180607
<ACCEPTANCE-DATETIME>20180607161614
ACCESSION NUMBER:		0001193125-18-186795
CONFORMED SUBMISSION TYPE:	424B3
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20180607
DATE AS OF CHANGE:		20180607

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			KLA TENCOR CORP
		CENTRAL INDEX KEY:			0000319201
		STANDARD INDUSTRIAL CLASSIFICATION:	OPTICAL INSTRUMENTS & LENSES [3827]
		IRS NUMBER:				042564110
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		424B3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-224982
		FILM NUMBER:		18886664

	BUSINESS ADDRESS:	
		STREET 1:		ONE TECHNOLOGY DRIVE
		CITY:			MILPITAS
		STATE:			CA
		ZIP:			95035
		BUSINESS PHONE:		4088756000

	MAIL ADDRESS:	
		STREET 1:		ONE TECHNOLOGY DRIVE
		CITY:			MILPITAS
		STATE:			CA
		ZIP:			95035

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	KLA INSTRUMENTS CORP
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
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<SEQUENCE>1
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<DESCRIPTION>424B3
<TEXT>
Document 1 - file: d562999d424b3.htm

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<TEXT>
Document 2 - file: g562999g16c11.jpg

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<SEQUENCE>3
<FILENAME>g562999g66b88.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g562999g66b88.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g562999g68w09.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g562999g68w09.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g562999g74u25.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g562999g74u25.jpg

</DOCUMENT>
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