Abdallah ibn al-Muktafi () (905 – September/October 949), better known by his regnal name al-Mustakfi bi-llah (, "Desirous of Being Satisfied with God Alone") 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. The Buwayhid dynasty began threatening the Capital. Tuzun, with the Caliph, marched to Wasit and defeated them. The tribute due from Mosul being withheld, Tuzun also marched against the Hamdanid ruler Nasir al-Dawla; but, after friendly relations were re-established, he returned.