Ibn Abī Uṣaybiʿa Muʾaffaq al-Dīn Abū al-ʿAbbās Aḥmad Ibn Al-Qāsim Ibn Khalīfa al-Khazrajī;
(Arabic: ابن أبي أصيبعة; 1203–1270), commonly referred to as Ibn Abi Usaibia, was a Syrian Arab physician of the 13th century CE. He compiled a biographical encyclopedia of notable physicians, from the Greeks, Romans and Indians up to the year 650AH/1252AD in the Islamic era.
Ibn Abi Usaibia was born at Damascus, a member of the Banu Khazraj tribe. The son of a physician, he studied medicine at Damascus and Cairo. In 1236 he was appointed physician to a new hospital in Cairo, but the following year he took up an offer by ruler of Damascus, of a post in Salkhad, near Damascus, where he lived until his death. His only surviving work is Lives of the Physicians. In that work he mentions another of his works, but it has not survived.