Mondorf-les-Bains (Luxembourgish: Munneref, German: Bad Mondorf) is a commune and town in south-eastern Luxembourg. It is part of the canton of Remich, which is part of the district of Grevenmacher. Mondorf-les-Bains is a spa town (hence its name), and has the only casino in Luxembourg. As of 2005, the town of Mondorf-les-Bains, which lies in the south-east of the commune, has a population of 2,812. Other towns within the commune include Altwies and Ellange.