Clausen is a quarter in central Luxembourg City, in southern Luxembourg. Clausen is one of the oldest neighbourhoods in the city of Luxembourg with its earlier history tying back to that of the breweries in the area during the 12th century. It is now a hot spot for nightlife with a number of trendy bars and restaurants. As of 31 December 2023, the quarter has a population of 1056 inhabitants, of whom 26.70% possessed Luxembourgish nationality, and 73.30% were of other nationalities.