Abu Ali al-Mansur ibn al-Musta'li, better known by his regnal name al-Amir bi-Ahkam Allah was the tenth Fatimid caliph, ruling from 1101 to his death in 1130, and the 20th imam of the Musta'li Isma'ili branch of Shia Islam.
- Occupation
- imam, caliph, politician
- Position held
- Fatimid Caliph, Ismaili imam
- Citizenship
- Fatimid Caliphate
- Born
- December 31, 1096, 1097
- Died
- October 7, 1130, 1130
