Al-Mustarshid, Caliph of Baghdad
Abu Mansur al-Faḍl ibn Ahmad al-Mustazhir (Arabic: أبو منصور الفضل بن أحمد المستظهر; 1092 – 29 August 1135) better known by his regnal name Al-Mustarshid Billah (Arabic: المسترشد بالله) was the Abbasid caliph in Baghdad from 1118 to 1135. He was son of his predecessor, caliph al-Mustazhir. He succeeded his father in the year 1118 as the Abbasid caliph. He was also an Arabic poet.