ʿAbbāsa was a city in eastern Egypt in the Islamic period, 15 farsangs (90 km) from Cairo. It was situated at the farthest habitable point in this part of eastern Egypt, on the road to Greater Syria (al-Shām) between Bilbays and al-Ṣāliḥiyya, and was considered a part of Wādī al-Sadīr (Abū al-Fidāʾ, 108; al-Maqrīzī, al-Khiṭaṭ, 1/232).

The foundation of the city is ascribed to ʿAbbāsa (q.v.), daughter of Aḥmad b. Ṭūlūn. When Khumārawayh b. Aḥmad married his daughter, Qaṭr al-Nadā, to the ʿAbbāsid caliph al-Muʿtaḍid, the bride set out for Iraq escorted…