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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington D.C. 20549

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                                    FORM 6-K

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                        REPORT OF FOREIGN PRIVATE ISSUER
                     PURSUANT TO RULE 13a-16 OR 15d-16 UNDER
                       THE SECURITIES EXCHANGE ACT OF 1934

                          For the Month of August 2007
                        Commission file number: 000-30910

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                          O2MICRO INTERNATIONAL LIMITED
                 (Translation of registrant's name into English)

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                 Grand Pavilion Commercial Centre, West Bay Road
                         P.O. Box 32331 SMB, George Town
                          Grand Cayman, Cayman Islands
                     (Address of principal executive office)

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Indicate by check mark whether the registrant files or will file annual reports
under cover Form 20-F or Form 40-F. Form 20-F |X| Form 40-F |_|

Indicate by check mark if the registrant is submitting the Form 6-K in paper as
permitted by Regulation S-T Rule 101(b)(1): |_|

Note: Regulation S-T Rule 101(b)(1) only permits the submission in paper of a
Form 6-K if submitted solely to provide an attached annual report to security
holders.

Indicate by check mark if the registrant is submitting the Form 6-K in paper as
permitted by Regulation S-T Rule 101(b)(7): |_|

Note: Regulation S-T Rule 101(b)(7) only permits the submission in paper of a
Form 6-K if submitted to furnish a report or other document that the registrant
foreign private issuer must furnish and make public under the laws of the
jurisdiction in which the registrant is incorporated, domiciled or legally
organized (the registrant's "home country"), or under the rules of the home
country exchange on which the registrant's securities are traded, as long as the
report or other document is not a press release, is not required to be and has
not been distributed to the registrant's security holders, and, if discussing a
material event, has already been the subject of a Form 6-K submission or other
Commission filing on EDGAR.

Indicate by check mark whether the registrant by furnishing the information
contained in this Form is also thereby furnishing the information to the
Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.
Yes |_| No |X|

If "Yes" is marked, indicate below the file number assigned to the registrant in
connection with Rule 12g3-2(b): 82-
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Information furnished on this Form 6-K:

1.    Other Events

On August 1, 2007, O2Micro International Limited (the "Company") issued a press
release announcing its financial results for the second quarter ended June 30,
2007. A copy of the Company's press release is attached hereto as Exhibit 99.1
and is incorporated herein by reference.


2.    Exhibits

(a)   Exhibits:

The Exhibit Index attached hereto is hereby incorporated by reference to this
Item.

(b)

                                  EXHIBIT INDEX


Exhibit
Number       Exhibit Title
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99.1         Press release announcing financial results for the second quarter
             ended June 30, 2007.

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                                   SIGNATURES

      Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this Report to be signed on its behalf by the
undersigned, thereunto duly authorized.


                                          O2MICRO INTERNATIONAL LIMITED

August 20, 2007                           By: /s/ Sterling Du
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                                              Sterling Du
                                              Chief Executive Officer