Sheikh
Mahdi Al-Khalissi, also known as Mohammad Mahdi Al-Khalissi and Mahdi Al-Khalisi, (died 1925) was a prominent religious leader in
Iraq during the British occupation of the early 20th century. At the time he was the Supreme
Marja (
Shia scholar and spiritual leader) in Iraq. He was also a professor and the head of the College of Divinity at
Kadhimiya,
Baghdad, Iran.