List of those who have held the title of Aga Khan Aga Khan I = Aga Hasan Ali Shah = HH Shah Hasan Ali Shah Mehalatee Aga Khan I (1800-1881), 46th Imam (1817-1881) Aga Khan II = HH Ali Shah Aga Khan II (about 1830 - 1885), 47th Imam (1881-1885) Aga Khan III = HRH Prince Sultan Mohammed, (1877-1957), 48th Imam (1885-1957) Aga Khan IV = Karim Aga Khan = HH Prince Aga Khan IV = Prince Karim El Husseni (b. 1936), 49th Imam of the Ismaelis (from 1957)