    <SEC-DOCUMENT>0001032975-19-000051-index.html : 20190723
    <SEC-HEADER>0001032975-19-000051.hdr.sgml : 20190723
    <ACCEPTANCE-DATETIME>20190723163832
    ACCESSION NUMBER:		0001032975-19-000051
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		10
    FILED AS OF DATE:		20190723
    DATE AS OF CHANGE:		20190723
    EFFECTIVENESS DATE:		20190723

    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:		19968165

    	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_defa14ax2019.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: logitech_defa14ax2019.htm

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    <SEQUENCE>2
    <FILENAME>nonusnoticea02.jpg
    <TEXT>
    Document 2 - file: nonusnoticea02.jpg

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    <SEQUENCE>3
    <FILENAME>proxycardpage1a02.jpg
    <TEXT>
    Document 3 - file: proxycardpage1a02.jpg

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    <SEQUENCE>4
    <FILENAME>proxycardpage2a02.jpg
    <TEXT>
    Document 4 - file: proxycardpage2a02.jpg

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    <SEQUENCE>5
    <FILENAME>responsecouponpage1a02.jpg
    <TEXT>
    Document 5 - file: responsecouponpage1a02.jpg

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    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>responsecouponpage2a02.jpg
    <TEXT>
    Document 6 - file: responsecouponpage2a02.jpg

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    <SEQUENCE>7
    <FILENAME>responsecouponpage3a01.jpg
    <TEXT>
    Document 7 - file: responsecouponpage3a01.jpg

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    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>usnoticepage1a02.jpg
    <TEXT>
    Document 8 - file: usnoticepage1a02.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>usnoticepage2a02.jpg
    <TEXT>
    Document 9 - file: usnoticepage2a02.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>usnoticepage3a02.jpg
    <TEXT>
    Document 10 - file: usnoticepage3a02.jpg

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    </SEC-DOCUMENT>