Ibrahim ibn Ali Abu Salim

Ibrahim ibn Ali, known as Abu Salim and by the regnal title al-Musta'in billah, was a Marinid sultan and a son of Abu al-Hasan Ali ibn Uthman. Born around 1335, he took the throne at Fes in 1359 after Abu Bakr ibn Faris, in the unsettled years following Abu Inan Faris's murder.

As ruler he named Ibn Khaldun as his judge of mazalim. After two years and three months, civilian and military officials overthrew him in the autumn of 1361, and Tashfin ibn Ali succeeded him.