Abu Taschfin I.

Abu Tashfin Abd al-Rahman I (Arabic : أبو تاشفين ابن أبو حمو موسى الأول; Abu Tashufin Abd al Rahman ibn Abu Musa Al-awal), was a Sultan of the Zayyanid dynasty ruling the Kingdom of Tlemcen, in modern-day Algeria.

He was the son of Abu Hammu I, the preceding Sultan of Tlemcen.

In 1318, he overthrew and killed his father.

In 1329, he led his forces east into Ifriqiya. He captured Algiers. In the Battle of er-Rais the Zayyanids defeated the Hafsids. They then occupied the Hafsid capital, Tunis.

Abu Tashufin then faced an alliance between Marinids and Hafsids which had been established through the marriage of a Hafsid princess to Abu al-Hasan, Sultan of Marinids. This led to the siege of Tlemcen from 1335-1337. Abu Tashufin I was killed during the siege of Tlemcen by the Marinids and the Hafsids.

Tlemcen was conquered by Abu al-Hasan Ali ibn Othman of the Marinid dynasty from 1337 until 1348, when it was retaken by Abu Tashufin's sons, Abu Said Uthman and Abu Thabit.

The Zayyanids were the first to sponsor of the construction of madrasas in their part of the Maghreb, and among the most famous in Tlemcen was the Tashfiniya Madrasa founded by Abu Tashufin.