    <SEC-DOCUMENT>0001032975-17-000033-index.html : 20170726
    <SEC-HEADER>0001032975-17-000033.hdr.sgml : 20170726
    <ACCEPTANCE-DATETIME>20170726170649
    ACCESSION NUMBER:		0001032975-17-000033
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		11
    FILED AS OF DATE:		20170726
    DATE AS OF CHANGE:		20170726
    EFFECTIVENESS DATE:		20170726

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			LOGITECH INTERNATIONAL SA
    		CENTRAL INDEX KEY:			0001032975
    		STANDARD INDUSTRIAL CLASSIFICATION:	COMPUTER PERIPHERAL EQUIPMENT, NEC [3577]
    		IRS NUMBER:				000000000
    		FISCAL YEAR END:			0331

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-29174
    		FILM NUMBER:		17983643

    	BUSINESS ADDRESS:
    		STREET 1:		7700 GATEWAY BOULEVARD
    		STREET 2:		C/O LOGITECH INC
    		CITY:			NEWARK
    		STATE:			CA
    		ZIP:			94560
    		BUSINESS PHONE:		5107958500

    	MAIL ADDRESS:
    		STREET 1:		7700 GATEWAY BOULEVARD
    		CITY:			NEWARK
    		STATE:			CA
    		ZIP:			94560
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>logitech_defa14ax2017.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: logitech_defa14ax2017.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>a11.jpg
    <TEXT>
    Document 2 - file: a11.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>a12.jpg
    <TEXT>
    Document 3 - file: a12.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>a13.jpg
    <TEXT>
    Document 4 - file: a13.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>a21.jpg
    <TEXT>
    Document 5 - file: a21.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>a31.jpg
    <TEXT>
    Document 6 - file: a31.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>a32.jpg
    <TEXT>
    Document 7 - file: a32.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>a33.jpg
    <TEXT>
    Document 8 - file: a33.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>a34.jpg
    <TEXT>
    Document 9 - file: a34.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>a41.jpg
    <TEXT>
    Document 10 - file: a41.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>a42.jpg
    <TEXT>
    Document 11 - file: a42.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>