Badr al-Jamali (Arabic: بدر الجمالى, 1015–1094) was a vizier, "Amir al-Juyush" (Arabic: امير الجيوش, Commander of Forces), Badi al-Duat (Arabic: 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 b. Ammar, for a relatively small price and converted to Islam. Later he joined Mamluks. He was later appointed as the governor of Acre during his service.
He was appointed Commander of the Armies in 1074. In 1090(484 AH), he discovered the head of Imam Hussain at Ascalon. He died in 1094. During his reign as visier he was the de facto ruler of the Fatimid empire, his authority being over everything except the Caliphate.
Badr Al-Jamali built many structures, including: