Musa ibn Abi'l-Afiya (موسى بن أبي العافية) was a Miknasa Berber chieftain who ruled the western Maghreb for the Fatimid Caliphate before defecting to the Umayyad Caliphate of Córdoba in 931. He played a central role in the Umayyad–Fatimid rivalry of the time, and is also remembered for his persecution of the Idrisids of Morocco.