Ali II may refer to:
Ali ibn Umar (ruled 874–883), Sultan of Morocco Ali II Lashkari (ruled 1034–1049), Shaddadid emir Ali II (Bavandid ruler) (ruled 1271) Ali II of Bornu, 17th century ruler of the Bornu Empire Ali II ibn Hussein (1712–1782), Bey of Tunis Ali II of Yejju (–), Ethiopian noble Dündar Ali Osman Osmanoğlu (1930–2021), titular Sultan of Turkey and Ottoman Caliph from 2017 to his death under the name Ali II