EXHIBIT 23.1


                          INDEPENDENT AUDITORS' CONSENT

We consent to the incorporation by reference in Registration Statement Nos.
33-90854, 333-36597, 333-63706 and 333-90480 of ARIAD Pharmaceuticals, Inc. on
Form S-8 and Registration Statement Nos. 333-51687 and 333-111401 of ARIAD
Pharmaceuticals, Inc. on Form S-3 of our report dated January 23, 2004,
appearing in this Annual Report on Form 10-K of ARIAD Pharmaceuticals, Inc. for
the year ended December 31, 2003.



/s/DELOITTE & TOUCHE LLP

Boston, Massachusetts
March 1, 2004