EXHIBIT 13



                    CERTIFICATION OF CEO AND CFO PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

     In connection with the Annual Report on Form 20-F of GigaMedia Limited (the
"Company") for the year ended December 31, 2003 as filed with the Securities and
Exchange Commission on the date hereof (the "Report"), Arthur Wang, as chief
executive officer of the Company, and Joseph Shea, as chief financial officer of
the Company, each hereby certifies, pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the
best of his knowledge:

     (1)  The Report fully complies with the requirements of Section 13(a) or
15(d) of the Securities Exchange Act of 1934; and

     (2)  The information contained in the Report fairly presents, in all
material respects, the financial condition and results of operations of the
Company.


/s/ ARTHUR WANG
- --------------------------------
Name:    Arthur Wang
Title:   Chief Executive Officer
Date:    June 30, 2004


/s/ JOSEPH SHEA
- --------------------------------
Name:    Joseph Shea
Title:   Chief Financial Officer
Date:    June 30, 2004


     This certification accompanies the Report pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the
Sarbanes-Oxley Act of 2002, be deemed filed by the Company for purposes of
Section 18 of the Securities Exchange Act of 1934, as amended.


     A signed original of this written statement required by Section 906 of the
Sarbanes-Oxley Act of 2002 has been provided to the Company and will be retained
by the Company and furnished to the Securities and Exchange Commission or its
staff upon request.