Fronteer Gold 20-F 2003 FY Annual report (foreign)

EXHIBIT 13.1

Certification of Chief Executive Officer

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 of Fronteer Development Group Inc. (the "Company"), a company incorporated under the laws of the Province of Ontario, Canada on Form 20-F/A for the fiscal year ended December 31, 2003 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), the undersigned, Mark O’Dea, President/CEO/Director of the Company, certifies, pursuant to 18 U.S.C. (S) 1350, as adopted pursuant to (S) 906 of the Sarbanes-Oxley Act of 2002, that:

(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 result of operations of the Company.

/s/“Mark O’Dea”________________

Mark O’Dea, President/CEO/Director

Date: June 4, 2004