Marienthal (Luxembourgish: Mariendall) is a village in the commune of Tuntange, in western Luxembourg. As of 2005[update], the village has a population of 105. It is known for the former monastery Marienthal, of which a few buildings remain.
Coordinates: 49°42′36″N 6°03′43″E / 49.710°N 6.062°E