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Exhibit 32.1

CERTIFICATION OF
CHIEF EXECUTIVE OFFICER
OF
ALLIANCE DATA SYSTEMS CORPORATION

This certification is provided pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and accompanies the quarterly report on Form 10-Q for the quarter ended September 30, 2003 (the "Form 10-Q") of Alliance Data Systems Corporation (the "Registrant").

I, J. Michael Parks, the Chief Executive Officer of the Registrant certify that 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 (15 U.S.C. 78m(a) or 78o(d)); 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 Registrant.

Dated: November 12, 2003
	/s/  J. MICHAEL PARKS Name: J. Michael Parks Chief Executive Officer
Subscribed and sworn to before me this 12th day of November, 2003.
/s/  JANE BAEDKE Name: Jane Baedke Title: Notary Public My commission expires:
October 23, 2004

A signed original of this written statement required by Section 906 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.

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Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER OF ALLIANCE DATA SYSTEMS CORPORATION