ʿAwn ibn Jaʿfar (Arabic: عون إبن جعفر) was a companion and relative of Muhammad.
He was born in Abyssinia, the third son of Ja'far ibn Abi Talib and Asma bint Umais. The family returned to Medina in 628.[1]
He married his cousin, Umm Kulthum bint Ali, who was a granddaughter of Muhammad. They had no children.[2]