General Mirza Aslam Beg NI(M) HI(M) SBt LoM, also known as M. A. Beg, is a retired Pakistani four-star general who served as the third Chief of Army Staff of the Pakistan Army from 1988 until his retirement in 1991. His appointment as chief of army staff came when his predecessor, President General Muhammad Zia-ul-Haq, died in an air crash on 17 August 1988.

The Chief of the Army Staff (COAS) is a position in the Pakistani Army held by a four-star general. As the highest-ranking officer, it is one of the most powerful positions in the army.