Sultan Ismail may refer to several rulers named Ismail with the title of sultan:
Sultan Ismail I of GranadaSultan Ismail II of GranadaSultan Ismail, 25th Sultan of Kelantan (1920-1944)Sultan Ismail of Johor, Sultan of Johor (1959-1981)Sultan Ismail Muabidin Riayat Shah, Sultan of Perak (1871-1874)Sultan Ismail Nasiruddin Shah, fourth Yang di-Pertuan Agong of Malaysia and Sultan of Terengganu (1945-1979)Sultan Ismail Petra, 28th Sultan of Kelantan (1979-2010)Ismail Ibn Sharif, Sultan of Morocco (1672–1727) reference