The Lauter (in its upper course also: Wieslauter) is a river in Germany and France.
The Lauter is a left tributary of the Rhine. Its length is 55 kilometres (34 mi), of which 39 km is in France and on the France–Germany border.[1] It is formed by the confluence of two headstreams (Scheidbach and Wartenbach) north of Hinterweidenthal in the Palatine Forest in the German state of Rhineland-Palatinate. It flows through Dahn, crosses the border with France, flows through Wissembourg, and then forms the French-German international boundary until its confluence with the Rhine near Lauterbourg and Neuburg am Rhein.