EXHIBIT 32.1

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


The  undersigned  hereby  certifies that the Quarterly  Report on Form 10-QSB of
Medizone International, Inc., for the quarter ended March 31, 2005 as filed with
the Securities and Exchange Commission,  fully complies with the requirements of
Section 13(a) or 15(d) of The  Securities  Exchange Act of 1934 (15 U.S.C.  78m)
and that  the  information  contained  in the  Report  fairly  presents,  in all
material respects, the financial condition and results of operations of Medizone
International, Inc.


Date:  June 14,  2005                 /s/ Edwin G. Marshall
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                                      Edwin G. Marshall
                                      Chief Executive Officer
                                      (Principal Executive Officer)