EXHIBIT 23.1

INDEPENDENT AUDITORS’ CONSENT

We consent to the incorporation by reference in the following Registration Statements of Morgan Stanley of our reports dated February 23, 2004 (which reports express unqualified opinions and explanatory paragraphs relating to the adoption of Statement of Financial Accounting Standards (“SFAS”) No. 123, “Accounting for Stock-Based Compensation,” as amended by SFAS No. 148, “Accounting for Stock-Based Compensation—Transition and Disclosure, an amendment of FASB Statement No. 123,” in 2003), included in this Annual Report on Form 10-K of Morgan Stanley for the fiscal year ended November 30, 2003:

Filed on Form S-3:

Registration Statement No. 33-57202

Registration Statement No. 33-60734

Registration Statement No. 33-89748

Registration Statement No. 33-92172

Registration Statement No. 333-07947

Registration Statement No. 333-22409

Registration Statement No. 333-27881

Registration Statement No. 333-27893

Registration Statement No. 333-27919

Registration Statement No. 333-46403

Registration Statement No. 333-46935

Registration Statement No. 333-76111

Registration Statement No. 333-75289

Registration Statement No. 333-34392

Registration Statement No. 333-47576

Registration Statement No. 333-83616

Filed on Form S-4:

Registration Statement No. 333-25003

Filed on Form S-8:

Registration Statement No. 33-62374

Registration Statement No. 33-63024

Registration Statement No. 33-63026

Registration Statement No. 33-78038

Registration Statement No. 33-79516

Registration Statement No. 33-82240

Registration Statement No. 33-82242

Registration Statement No. 33-82244

Registration Statement No. 333-04212

Registration Statement No. 333-25003

Registration Statement No. 333-28141

Registration Statement No. 333-28263

Registration Statement No. 333-62869

Registration Statement No. 333-78081

Registration Statement No. 333-95303

Registration Statement No. 333-55972

Registration Statement No. 333-85148

Registration Statement No. 333-85150

    /S/    DELOITTE & TOUCHE LLP

New York, New York

February 23, 2004