    <SEC-DOCUMENT>0001104659-21-128524-index.html : 20211021
    <SEC-HEADER>0001104659-21-128524.hdr.sgml : 20211021
    <ACCEPTANCE-DATETIME>20211021170139
    ACCESSION NUMBER:		0001104659-21-128524
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		24
    CONFORMED PERIOD OF REPORT:	20211209
    FILED AS OF DATE:		20211021
    DATE AS OF CHANGE:		20211021

    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:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-23125
    		FILM NUMBER:		211337645

    	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>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>tm216596-1_def14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: tm216596-1_def14a.htm

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

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>lg_osisysteminc485-pn.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: lg_osisysteminc485-pn.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>lg_soyink-bw1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: lg_soyink-bw1.jpg

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

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>tm207232d2-icon_qrbwlr.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: tm207232d2-icon_qrbwlr.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>tm216596d1-pc_ceopn.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: tm216596d1-pc_ceopn.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>tm216596d1-pc_composit1pn.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: tm216596d1-pc_composit1pn.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>tm216596d1-pc_diversitypn.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: tm216596d1-pc_diversitypn.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>tm216596d1-pc_indepenpn.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: tm216596d1-pc_indepenpn.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>tm216596d1-pc_neopn.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: tm216596d1-pc_neopn.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>tm216596d1-tbl_dirbusinpn.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: tm216596d1-tbl_dirbusinpn.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>tm216596d1_px-01proxybw.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: tm216596d1_px-01proxybw.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>tm216596d1_px-02proxy4c.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: tm216596d1_px-02proxy4c.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>tm216596d3-icon_accountbw.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: tm216596d3-icon_accountbw.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>tm216596d3-icon_computpn.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: tm216596d3-icon_computpn.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>tm216596d3-icon_innovatbw.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: tm216596d3-icon_innovatbw.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>tm216596d3-icon_integritybw.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: tm216596d3-icon_integritybw.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>tm216596d3-icon_mailpn.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: tm216596d3-icon_mailpn.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>tm216596d3-icon_phonepn.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: tm216596d3-icon_phonepn.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>tm216596d3-icon_qrbwlr.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: tm216596d3-icon_qrbwlr.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>tm216596d3-icon_teamworkbw.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 22 - file: tm216596d3-icon_teamworkbw.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>tm216596d3-icon_wwwpn.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 23 - file: tm216596d3-icon_wwwpn.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>tm216596d3-pc_malefemalepn.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 24 - file: tm216596d3-pc_malefemalepn.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>