exv99w8

EXHIBIT 99.8

CERTIFICATION 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 Cameco Corporation (the “Company”) on Form 40-F for the year ended December 31, 2007, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Gerald W. Grandey, President & Chief Executive Officer of the Company, certify, 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 my 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.



By:	/s/ Gerald W. Grandey
	Gerald W. Grandey
	President & Chief Executive Officer

March 31, 2008