Exhibit 32

Certification of Periodic Financial Report
Pursuant to 18 U.S.C. Section 1350

Each of the undersigned officers of Dyax Corp. (the “Company”) certifies, under the standards set forth in and solely for the purposes of 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report on Form 10-Q of the Company for the quarter ended June 30, 2003 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and information contained in that Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:	August 14, 2003	/s/ Henry E. Blair
		Henry E. Blair
		Chief Executive Officer

Dated:	August 14, 2003	/s/ Stephen S. Galliker
		Stephen S. Galliker
		Chief Financial Officer