Grevels (Luxembourgish: Gréiwels) is a small town in the commune of Wahl, in western Luxembourg. As of 2005[update], the town has a population of 196. Nearby is the source of the Wark.
Coordinates: 49°51′N 5°55′E / 49.850°N 5.917°E / 49.850; 5.917