Al-Hakim bi-Amr Allah, Fatimid caliph (born 985)

Al-Hakim bi-Amr Allah

6th Fatimid caliph (r. 996–1021) and 16th Ismaili Imam

Abu Ali al-Mansur, better known by his regnal name al-Hakim bi-Amr Allah, was the sixth Fatimid caliph and 16th Ismaili imam (996–1021). Al-Hakim is an important figure in a number of Shia Ismaili sects, such as the world's 15 million Nizaris and 1–2 million Musta'lis, in…