Ja'far ibn Abdallah al-Mansur was the elder son of second Abbasid caliph al-Mansur and elder brother of third Abbasid caliph al-Mahdi. As the elder son of al-Mansur, he was the candidate to the caliphal throne until his premature death.
- Occupation
- prince, wali
- Position held
- Wali of Mosul, Amir al-Hajj
- Citizenship
- Abbasid Caliphate
- Born
- 742
- Died
- 768
