Ibrahim ibn Jaʽfar al-Mutawakkil (Arabic: ابراهيم بن جعفر المتوكل; died 866), better known by his laqab al-Mu'ayyad (المؤيد, was an Abbasid prince, the third son of the Abbasid caliph al-Mutawakkil, and brother of al-Muntasir and al-Mu'tazz, who both would eventually become caliphs as well.