Mersch (Luxembourgish: Miersch) is a commune and town in central Luxembourg, capital of the canton of Mersch. It is situated at the confluence of the rivers Alzette, Mamer and Eisch.As of 2001, the town of Mersch, which lies in the centre of the commune, has a population of 3,345. Other towns within the commune include Beringen, Berschbach, Moesdorf, Pettingen, Reckange, Rollingen, and Schoenfels.Mersch is the home of the National Literature Centre, Luxembourg's national literary archive.