Abu Abd Allah Mohammed ibn Abdun al-Jabali al-Adadi () (died after 976) was a physician and mathematician from
Al-Andalus
Al-Andalus () was the Muslim-ruled area of the Iberian Peninsula. The name refers to the different Muslim states that controlled these territories at various times between 711 and 1492. At its greatest geographical extent, it occupied most o ...
. He is the author of ''Risala fi al-Taksir'' (Treatise on Measurements), the oldest remaining mathematical text from
Al-Andalus
Al-Andalus () was the Muslim-ruled area of the Iberian Peninsula. The name refers to the different Muslim states that controlled these territories at various times between 711 and 1492. At its greatest geographical extent, it occupied most o ...
. He travelled to the learning centers in the East in the years after 958 C.E. He stayed in
Basra
Basra () is a port city in Iraq, southern Iraq. It is the capital of the eponymous Basra Governorate, as well as the List of largest cities of Iraq, third largest city in Iraq overall, behind Baghdad and Mosul. Located near the Iran–Iraq bor ...
and visited al-Fustat (Old
Cairo
Cairo ( ; , ) is the Capital city, capital and largest city of Egypt and the Cairo Governorate, being home to more than 10 million people. It is also part of the List of urban agglomerations in Africa, largest urban agglomeration in Africa, L ...
), Egypt where he was put in charge of the hospital. Ibn Abdun studied the ideas of Abu Sulayman Sijistani (d. 990) and according to one source he met him personally in Basra. He returned to Cordoba in 971 C.E.. He entered the service of the Caliph al-Mustansir (died 976) and his son Hisham II al-Mu'ayad. Ibn Abdun was the teacher of Ibn al-Kattani.