EXHIBIT 99.1

      CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER
                                   PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002



      I, James J. Kim, certify, pursuant to 18 U.S.C. Section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Annual
Report of Amkor Technology, Inc. on Form 10-K/A for the year ended December 31,
2002 fully complies with the requirements of Section 13(a) or 15(d) of the
Securities Exchange Act of 1934 and that information contained in such Form
10-K/A fairly presents in all material respects the financial condition and
results of operations of Amkor Technology, Inc.

                                                By:  /s/ James J. Kim
                                                     _________________________
                                                Name:    James J. Kim
                                                Title:   Chief Executive Officer


      I, Kenneth T. Joyce, certify, pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the
Annual Report of Amkor Technology, Inc. on Form 10-K/A for the year ended
December 31, 2002 fully complies with the requirements of Section 13(a) or 15(d)
of the Securities Exchange Act of 1934 and that information contained in such
Form 10-K/A fairly presents in all material respects the financial condition and
results of operations of Amkor Technology, Inc.

                                                By: /s/ Kenneth T. Joyce
                                                    _________________________
                                                Name:    Kenneth T. Joyce
                                                Title:   Chief Financial Officer



Signed originals of these written statements required by Section 906 have been
provided to Amkor Technology, Inc., and will be retained by Amkor Technology,
Inc., and furnished to the Securities and Exchange Commission or its staff upon
request.