Mirza Basheer-ud-Din Mahmood Ahmad (Urdu: مرزا بشیر الدین محمود احمد)(born January 12, 1889 in Qadian; died November 7, 1965 in Rabwah), was the second caliph of the Ahmadiyya Muslim Community and the eldest son of Mirza Ghulam Ahmad from his second wife. He was given the title of Khalifatul Masih II. He was elected to this office at the young age of 25 on 14 March 1914, the day after the death of his predecessor, Hakim Noor-ud-Din.
