EXHIBIT 23.1


                          INDEPENDENT AUDITORS' CONSENT

     We consent to the incorporation by reference in this Registration Statement
on Form S-3 of ARIAD Pharmaceuticals, Inc. of our report dated March 13, 2003,
appearing in the Annual Report on Form 10-K of ARIAD Pharmaceuticals, Inc. for
the year ended December 31, 2002, and to the reference to us under the heading
"Experts" in the Prospectus, which is part of such Registration Statement.


/S/ DELOITTE & TOUCHE LLP

Boston, Massachusetts
December 2, 2003