| Conflict: | Siege of Tlemcen |
| Place: | Tlemcen, Zayyanid Kingdom |
| Date: | 1335–1337 |
| Combatant1: | Marinid Sultanate |
| Combatant2: | Zayyanid Kingdom |
| Commander1: | Abu Al-Hasan |
| Commander2: | Abu Tashufin I |
| Result: | Marinid victory |
| Territory: | Temporary occupation of the Zayyanid Kingdom by the Marinid Sultanate |
| Units1: | Unknown |
| Units2: | Unknown |
The siege of Tlemcen from 1335 to 1337 was a military operation undertaken by the Marinid Sultan Abu al-Hasan Ali ibn Othman against the capital of the Zayyanid Kingdom. The siege began in 1335, and ended with the fall of the city to the Marinids in 1337.[1] The Zayyanid Sultan Abu Tashufin and his three sons died in battle.[2] [3] The victory of Abu al-Hasan led to the annexation of the Kingdom of Tlemcen to the Marinid Empire for a more than a decade.