_______________________

The Bank of New York
ADR Division

One Wall Street, 29th Floor

New York, New York 10286

(212) 495-1784

 (Address, including zip code, and telephone number, including area code, of agent for service)

Copies to:
Peter B. Tisne, Esq.
Emmet, Marvin & Martin, LLP
120 Broadway
New York, New York  10271
(212) 238-3010

It is proposed that this filing become effective under Rule 466
[ ] immediately upon filing
[ ] on ( Date ) at ( Time ).
If a separate registration statement has been filed to register the deposited shares, check the following box.  [ ]

The registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the registrant shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933 or until the Registration Statement shall become effective on such date as the Commission, acting pursuant to said Section 8(a) may determine.

Pursuant to Rule 429 under the Securities Act of 1933, the Prospectus contained herein also relates to the Depositary Shares of the registrant covered by a previous Registration Statement on Form F-6 of the registrant (Regis. No. 333-06464).

The prospectus consists of the proposed revised form of American Depositary Receipt included as Exhibit A to the form of Deposit Agreement, as amended, filed as Exhibit 1 to this Registration Statement, which is incorporated herein by reference.

PART I

INFORMATION REQUIRED IN PROSPECTUS

Item - 1.

Description of Securities to be Registered

Cross Reference Sheet

Item - 2.

Available Information

PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

Item - 3.

Exhibits

a.-1

Form of Amendment No. 3 to Deposit Agreement dated as of ____________, 2006, among Logitech International S.A., The Bank of New York as Depositary, and Owners and Beneficial Owners from time to time of American Depositary Receipts issued thereunder. - Filed herewith as Exhibit 1.

a.-2

Amendment No. 2 to Deposit Agreement dated as of August 2, 2001, among Logitech International S.A., The Bank of New York as Depositary, and Owners and Beneficial Owners from time to time of American Depositary Receipts issued thereunder. – Previously filed.

a.-3

Amendment No. 1 to Deposit Agreement dated as of July 5, 2000, among Logitech International S.A., The Bank of New York as Depositary, and Owners and Beneficial Owners from time to time of American Depositary Receipts issued thereunder. – Previously filed.

a.-4

Deposit Agreement dated as of March 27, 1997, among Logitech International S.A., The Bank of New York as Depositary, and Owners and Beneficial Owners from time to time of American Depositary Receipts issued thereunder. – Previously filed.

b.

Any other agreement to which the Depositary is a party relating to the issuance of the Depositary Shares registered hereby or the custody of the deposited securities represented. - Not Applicable.

c.

Every material contract relating to the deposited securities between the Depositary and the issuer of the deposited securities in effect at any time within the last three years. - See (a) above.

d.

Opinion of Sullivan & Cromwell, counsel for the Depositary, as to legality of the securities to be registered. – Previously Filed.

Item - 4.

Undertakings

Previously Filed.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that all the requirements for filing on Form F-6 are met and has duly caused this Post-Effective Amendment No. 3 to the Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of New York, State of New York, September 14, 2006.

Legal entity created by the agreement for the issuance of American Depositary Receipts for Registered Shares of the par value of CHF 0.25 each, of Logitech International S.A.

By:

The Bank of New York,
 As Depositary

By:  /s/ Joanne F. DiGiovanni

Name:  Joanne F. DiGiovanni

Title:    Vice President

Pursuant to the requirements of the Securities Act of 1933, Logitech International S.A. has caused this Post-Effective Amendment No. 3 to the Registration Statement to be signed on its behalf by the undersigned thereunto duly authorized, in the City of Fremont, California on September 14, 2006.

Logitech International S.A.

By:  /s/ Guerrino De Luca

Name: Guerrino De Luca

Title: President and Chief Executive Officer

By:  /s/ Mark J. Hawkins
Name:  Mark J. Hawkins
Title:  Chief Financial Officer and Authorized U.S. Representative

Each person whose signature appears below hereby constitutes and appoints Guerrino De Luca and Mark J. Hawkins, and each of them severally, his true and lawful attorney-in-fact with power of substitution and resubstitution to sign in his name, place and stead in any and all capacities the Registration Statement and any and all amendments thereto (including post-effective amendments) and any documents in connection therewith, and to file the same with the Securities and Exchange Commission, granting unto each of said attorneys full power to act with or without the other, and full power and authority to do and perform, in his name and on his behalf, every act whatsoever which such attorneys, or any one of them, may deem necessary or desirable to be done in connection therewith as fully and to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney-in-fact, or any of them, or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, this Post-Effective Amendment No. 3 to the Registration Statement has been signed by the following persons in the capacities indicated below and on September 14, 2006.

INDEX TO EXHIBITS