<SEC-DOCUMENT>0001104659-14-072259-index.html : 20141017
<SEC-HEADER>0001104659-14-072259.hdr.sgml : 20141017
<ACCEPTANCE-DATETIME>20141017163024
ACCESSION NUMBER:		0001104659-14-072259
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20141017
DATE AS OF CHANGE:		20141017
EFFECTIVENESS DATE:		20141017

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			OSI SYSTEMS INC
		CENTRAL INDEX KEY:			0001039065
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				330238801
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23125
		FILM NUMBER:		141162154

	BUSINESS ADDRESS:	
		STREET 1:		12525 CHADRON AVE
		CITY:			HAWTHORNE
		STATE:			CA
		ZIP:			90250
		BUSINESS PHONE:		3109780516

	MAIL ADDRESS:	
		STREET 1:		12525 CHADRON AVENUE
		CITY:			HAWTHORNE
		STATE:			CA
		ZIP:			90250
</SEC-HEADER>
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<SEQUENCE>1
<FILENAME>a14-21657_3defa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: a14-21657_3defa14a.htm

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<SEQUENCE>2
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<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g216573bgi001.gif

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g216573bgi002.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g216573bgi002.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g216573bgi003.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g216573bgi003.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g216573bgi004.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g216573bgi004.gif

</DOCUMENT>
</SEC-DOCUMENT>