Exhibit 32.1

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

This certification is provided pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and accompanies the Quarterly Report on Form 10-Q (the “Form 10-Q”) for the quarter ended June 30, 2003 of The Keith Companies, Inc. (the “Issuer”).

I, Aram H. Keith, the Principal Executive Officer of Issuer certify that, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge:

(i)	the Form 10-Q fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934; and
(ii)	the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Issuer.

Date: August 13, 2003

	/s/ Aram H. Keith
Name:	Aram H. Keith