Grundhof (Luxembourgish: Grondhaff) is a village in the commune of Berdorf, in eastern Luxembourg. As of 2001[update], the village had a population of 26. Nearby is the confluence of the Sauer and the Black Ernz.
Coordinates: 49°49′55″N 6°19′47″E / 49.83194°N 6.32972°E