Mohammad Hasan Mamaqani (Arabic: محمد حسن المامقاني‎; 1822–March 15, 1905) was a leading mujtahid of Najaf in the 19th century. He was born and educated in Najaf . He studied with the highest religious authority of his time, Morteza Ansari. His daughter and her son became renowned scholars in their own right, Bibi Khanum (d. 1950) and Mohammad Hadi al-Milani (d. 1975). He is buried under the iwan of the Husayn shrine.