Tashfin ibn Ali
Tashfin ibn Ali, known by the kunya Abu Umar, was a Marinid sultan and a son of Abu al-Hasan Ali ibn Uthman. In 1361 he succeeded Ibrahim ibn Ali at Fes, amid the succession turmoil after Abu Inan Faris's murder in 1358.
Tashfin was a figurehead in the grip of his vizier Umar ibn Abd Allah. After a three-month reign the vizier deposed him around December 1361, and he died soon afterwards. Muhammad II ibn Faris then succeeded him.