Al-Ḥasan ibn ʿAmmār al-Kalbī,[1] usually called simply Ibn Ammar in the Arabic sources,[2][3] was an Arab commander for the Fatimid Caliphate. A member of the Kalbid family, he was active in the wars with the Byzantine Empire in Sicily in the 960s, leading the capture of Taormina and Rometta, which completed the Muslim conquest of Sicily.