Abdallah ibn al-Muktafi better known by his regnal name al-Mustakfi bi-llah was the Abbasid caliph in Baghdad from 944 to 946. He was installed by Tuzun, a Turkish general who deposed and blinded the previous caliph, al-Muttaqi, and was in turn deposed after the Buyids captured Baghdad.

Al-Mustakfi was a son of Caliph al-Muktafi (r. 902–908) and a Greek concubine, Ghusn. He was raised to the throne, at the age of 41. The new caliph was a puppet of the Turkic troops, with the treasury empty, and the resulting chaos and poverty threatening even Baghdad with famine. At the same time, Tuzun's control of Baghdad was threatened by the Daylamite Buyids, who had allied themselves with the Baridis of Basra.

Today on 29th January in the year 946, Caliph Al-Mustakfi is blinded and deposed by Emir Mu'izz al-Dawla, ruler of the Buyid Empire. He is succeeded by Al-Muti as caliph of the Abbasid Caliphate. Depicted here is a silver Dirham issued under his reign from Baghdad mint.

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