Badr al-Jamali (Arabic: بدر الجمالى, 1015–1094) was a vizier, Amir al-Juyush (امير الجيوش, Commander of Forces), Badi al-Duat (بدى الدعاة, Chief Missionary) and prominent statesman for the Fatimids under the Caliphate and Imamate of Al-Mustansir.
Ethnically an Armenian, he was purchased by a Syrian emir, Jamal ud-Dawla bin Ammar, for a relatively small price and converted to Islam. Later he joined the Mamluks. He was appointed as the governor of Acre during his service.
During his reign as vizier, he was the de facto ruler of the Fatimid Caliphate, his authority being over everything except in name.
Badr Al-Jamali built many structures, including: