| Ben Youssef Mosque | |
|---|---|
مسجد ابن يوسف | |
 | |
| Location | |
| Location | Marrakesh, Morocco |
  Shown within Morocco | |
| Geographic coordinates | 31°37′54.93″N 7°59′13.78″W / 31.6319250°N 7.9871611°W |
| Architecture | |
| Type | Mosque |
The Ben Youssef Mosque (also known by its English spelling as the "Ibn Yusuf Mosque"; Arabic: مسجد ابن يوسف), is a mosque in the Medina quarter of Marrakesh, Morocco, named after the Almoravid emir Ali ibn Yusuf. It is arguably the oldest and most important mosque in Marrakesh.