| Official Name: | Fderîck |
| Native Name: | افديرك |
| Native Name Lang: | ar |
| Pushpin Map: | Mauritania |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 300 |
| Pushpin Map Caption: | Location in Mauritania |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Tiris Zemmour Region |
| Area Total Km2: | 169,684 |
| Population As Of: | 2023 |
| Population Total: | 11,623 |
| Coordinates: | 22.6783°N -12.7114°W |
| Elevation M: | 455 |
Fderîck or F'dérick (ar|افديرك) is a commune and town in the Tiris Zemmour Region of northern Mauritania. It is located near the border with Western Sahara, in a remote area of the Sahara desert, on the west side of the Kediet Ijill. Fderîck was constructed in the late 1950s around the former French Fort Gouraud to exploit the area's iron deposits. The iron is transported by the Mauritania Railway to the port at Nouadhibou. The city of Atar provides access to the capital, Nouakchott.[1]
The entire commune covers an area of 169,684 km², making it one of the largest municipalities in the world in terms of area. The main town is located in the west of the commune.[2]
Zouérat lies 30 km east of Fderîck.