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|   x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934      |
|----------|----------------------------------------------------------------------------------------------|
|     | For the quarter ended June 30, 2010                                                          |
|     |                                                                                         |
|     | or                                                                                           |
|     |                                                                                         |
| £   | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934     |
|     | For the Transition Period from          to |

| Canton of Vaud, Switzerland(State or other jurisdictionof incorporation or organization) | None(I.R.S. EmployerIdentification No.) |
|------------------------------------------------------------------------------------------|-----------------------------------------|

| Logitech International S.A.Apples, Switzerlandc/o Logitech Inc.6505 Kaiser DriveFremont, California 94555(Address of principal executive offices and zip code) |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                                                                                                                                                           |
| (510) 795-8500(Registrant’s telephone number, including area code)                                                                                       |

| Large accelerated filer  x                                                               | Accelerated filer  o         |
|----------------------------------------------------------------------------------------------------|----------------------------------------|
| Non-accelerated filer    (Do not check if a smaller reporting company)  o | Smaller reporting company  o |

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|     101.INS | XBRL Instance Document                        |
|---------------------------------|-----------------------------------------------|
|     101.SCH | XBRL Taxonomy Extension Schema                |
|     101.CAL | XBRL Taxonomy Extension Calculation Linkbase  |
|     101.DEF | XBRL Taxonomy Extension Definition Linkbase   |
|     101.LAB | XBRL Taxonomy Extension Label Linkbase        |
|     101.PRE | XBRL Taxonomy Extension Presentation Linkbase |

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| Exhibit No. |   | Description                                                                          |
|-------------|--------|--------------------------------------------------------------------------------------|
|        |   |                                                                                 |
| 31.1        |   | Rule 13a-14(a)/15d-14(a) Certification of Chief Executive Officer *                  |
|        |   |                                                                                 |
| 31.2        |   | Rule 13a-14(a)/15d-14(a) Certification of Chief Financial Officer *                  |
|        |   |                                                                                 |
| 32.1        |   | Section 1350 Certifications of Chief Executive Officer and Chief Financial Officer * |
|        |   |                                                                                 |
| 101.INS     |   | XBRL Instance Document **                                                            |
|        |   |                                                                                 |
| 101.SCH     |   | XBRL Taxonomy Extension Schema Document **                                           |
|        |   |                                                                                 |
| 101.CAL     |   | XBRL Taxonomy Extension Calculation Linkbase Document **                             |
|        |   |                                                                                 |
| 101.LAB     |   | XBRL Taxonomy Extension Label Linkbase Document **                                   |
|        |   |                                                                                 |
| 101.PRE     |   | XBRL Taxonomy Extension Presentation Linkbase Document **                            |
|        |   |                                                                                 |
| 101.DEF     |   | XBRL Taxonomy Definition Linkbase Document **                                        |

| * | Previously filed or furnished as an exhibit to Logitech International S.A.’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2010. |
|---|-------------------------------------------------------------------------------------------------------------------------------------------------------|

| ** | Furnished with this Form 10-Q/A. |
|----|----------------------------------|

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|   |                                                    |
|--------|---------------------------------------------------------|
|   | /s/ Gerald P. Quindlen                                  |
|   | Gerald P. QuindlenPresident and Chief Executive Officer |

|   |                                                                     |
|--------|--------------------------------------------------------------------------|
|   | /s/ Erik K. Bardman                                                      |
|   | Erik K. BardmanSenior Vice President, Financeand Chief Financial Officer |

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