UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-PX

ANNUAL REPORT OF PROXY VOTING RECORD OF REGISTERED

MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number 811-22635

Blackstone Alternative Alpha Master Fund

(Exact name of registrant as specified in charter)

345 Park Avenue

28^th Floor

New York, New York 10154

(Address of principal executive offices) (Zip code)

Registrant’s telephone number, including area code: 212-583-5000

Peter Koffler, Esq.

c/o Blackstone Alternative Asset Management L.P.

345 Park Avenue

28^th Floor

New York, NY 10154

(Name and address of agent for service)

COPY TO:

James E. Thomas, Esq.

Ropes & Gray LLP

Prudential Tower

800 Boylston Street

Boston, MA 02199-3699

Date of fiscal year end: 3/31

Date of reporting period: 7/1/12 – 6/30/13

PROXY VOTING RECORD

FOR PERIOD JULY 1, 2012 TO JUNE 30, 2013

There were no matters relating to a portfolio security considered at any shareholder meeting held during the period covered by this report and with respect to which the registrant was entitled to vote.

SIGNATURES

Pursuant to the requirements of the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Registrant:     Blackstone Alternative Alpha Master Fund

By (Signature and Title)	/s/Arthur Liao
	Arthur Liao, Treasurer (Principal Financial and Accounting Officer)

Date 8/26/13