Hazrat Mirza Tahir Ahmad (Urdu: مرزا طاہراحمد) (December 18, 1928 – April 19, 2003) was Khalifatul Masih IV, Caliph of the Ahmadiyya Muslim Community and successor of Mirza Ghulam Ahmad. He was elected to this office on 10 June 1982, the day after the death of his predecessor, Mirza Nasir Ahmad. He was the son of Mirza Basheer-ud-Din Mahmood Ahmad, the second Caliph and was the half-brother of Mirza Nasir Ahmad, the third Caliph.
