| Muhammad ibn Jafar | |
| Native Name: | Arabic: محمد بن جعفر |
| Birth Place: | Abyssinia |
| Father: | Ja'far ibn Abi Talib |
| Mother: | Asma bint Umais |
| Spouse: | Umm Kulthum bint Ali |
| Family: | Banu Hashim |
Muḥammad ibn Jaʿfar (Arabic: محمد بن جعفر) was a companion and relative of the Islamic prophet Muhammad.
He was the son of Muhammad's cousin, Ja'far ibn Abi Talib, and of Asma bint Umais. His uncle Ali particularly wished that his daughters should marry Ja'far's sons. In due course, Muhammad ibn Ja'far did marry Ali's daughter Umm Kulthum, who was the widow of his brother Awn.[1]