EXHIBIT 23-b
Consent of Independent Auditors
We consent to the reference to our firm under the caption "Experts" in this
Amendment No. 1 to the Registration Statement on Form S-3 and related Prospectus
of Morgan Stanley Dean Witter & Co. (the "Company") for the registration of
$16,256,130,907 of Debt Securities, Warrants, Preferred Stock, Purchase
Contracts, and Units of the Company and to the incorporation by reference
therein of our report with respect to the 1996 consolidated financial statements
and financial statement schedule of Morgan Stanley Group Inc. dated May 27, 1997
included in the Company's Form 10-K for the fiscal year ended November 30, 1998,
filed with the Securities and Exchange Commission.
/s/ Ernst & Young LLP
ERNST & YOUNG LLP
New York, New York
May 4, 1999
Consent of Independent Auditors
We consent to the reference to our firm under the caption "Experts" in this
Amendment No. 1 to the Registration Statement on Form S-3 and related Prospectus
of Morgan Stanley Dean Witter & Co. (the "Company") for the registration of
$16,256,130,907 of Debt Securities, Warrants, Preferred Stock, Purchase
Contracts, and Units of the Company and to the incorporation by reference
therein of our report with respect to the 1996 consolidated financial statements
and financial statement schedule of Morgan Stanley Group Inc. dated May 27, 1997
included in the Company's Form 10-K for the fiscal year ended November 30, 1998,
filed with the Securities and Exchange Commission.
/s/ Ernst & Young LLP
ERNST & YOUNG LLP
New York, New York
May 4, 1999