Sultan Ismail may refer to several rulers named Ismail with the title of sultan:
- Sultan Ismail of Johor, Sultan of Johor (1959-1981)
- Sultan Ismail Muabiddin 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 (1980–present)