<SEC-DOCUMENT>0001193125-18-287447-index.html : 20180928
<SEC-HEADER>0001193125-18-287447.hdr.sgml : 20180928
<ACCEPTANCE-DATETIME>20180928161607
ACCESSION NUMBER:		0001193125-18-287447
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		7
CONFORMED PERIOD OF REPORT:	20181107
FILED AS OF DATE:		20180928
DATE AS OF CHANGE:		20180928
EFFECTIVENESS DATE:		20180928

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:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-09992
		FILM NUMBER:		181094354

	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>
<DOCUMENT>
<TYPE>DEF 14A
<SEQUENCE>1
<FILENAME>d604315ddef14a.htm
<DESCRIPTION>DEF 14A
<TEXT>
Document 1 - file: d604315ddef14a.htm

</DOCUMENT>
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<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g604315g38j75.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g604315g38j75.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g604315g62b92.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g604315g62b92.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g604315g87w32.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g604315g87w32.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g604315g91p30.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g604315g91p30.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g604315page001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g604315page001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g604315page002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g604315page002.jpg

</DOCUMENT>
</SEC-DOCUMENT>