MSCI (MSCI) 8-K Changes in Registrant's Certifying Accountant

Exhibit 16.1

March 14, 2014

Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549-7561

Dear Sirs/Madams:

We have read Item 4 of MSCI Inc.’s Form 8-K dated March 14, 2014, and we agree with the statements made therein.

Yours truly,

Member of

Deloitte Touche Tohmatsu Limited