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We consent to the incorporation by reference in Registration Statement Nos. 33-90854, 333-36597, 333-63706, 333-90480 and 333-135473 on Form S-8 and Registration Statement No. 333-140333 on Form S-3 of our reports dated March 14, 2008, relating to the consolidated financial statements of ARIAD Pharmaceuticals, Inc. (which report expresses an unqualified opinion and includes an explanatory paragraph regarding the adoption of Statement of Financial Accounting Standards No. 123R, Share-Based Payment, effective January 1, 2006) and the effectiveness of ARIAD Pharmaceuticals, Inc.'s internal control over financial reporting, appearing in this Annual Report on Form 10-K of ARIAD Pharmaceuticals, Inc. for the year ended December 31, 2007.