Abu Muhammad Abdallah ibn Ahmad ibn Salim (or ibn Sulaym) al-Aswani (Arabic: أبو محمد عبد الله ابن احمد ابن سليم الأسواني‎, romanized: ʿAbū Muḥammad Abd Allāh ibn Aḥmad ibn Salīm/Sulaym al-Aswānī) was a tenth-century Egyptian diplomat and Shia Muslim dāʿī (missionary) in the service of the Fatimids. Following the Fatimid conquest of Egypt, he was dispatched to Nubia by the Fatimid governor Jawhar al-Siqilli in 975 AD (365 AH) or perhaps a little earlier. He left a written record of his mission, the Kitāb Akhbār al-Nūba waʾl-Muḳurra wa ʿAlwa waʾl-Buja waʾl-Nīl ("Book of Reports on Nubia, Makuria, Alodia, the Beja and the Nile"). This is the only surviving eyewitness description of medieval Nubia other than the very brief account in Ibn Ḥawqal.