, a minor dynasty of mediaeval Arabia in the al-Aḥsā/al-Ḥasā [q.v.] and al-Baḥrayn [q.v.] areas of eastern Arabia. Their rule began there in 651/1253 after their seizure of the region from the ʿUyūnids [q.v.]. The ʿUṣfūr were kings of Banū ʿĀmir b. ʿAwf b. Mālik, a baṭn of ʿUḳayl, in the 7th/13th century, whilst their subjects included the Banū T̲h̲aʿlaba. Little appears to be known of their history. In the mid-9th/15th century, a branch of the ʿUṣfūrids called the D̲j̲abrids assumed control of al-Aḥsā.

(G.R. Smith)