Wadern - a city in Germany, Saarland, in the Merzig-Wadern district. It is inhabited by 16 406 people (2010). It is situated on the rivers Prims, Löster, Wahnbach and Wadrill in the Hunsrück region. It is the third largest city in Saarland after Saarbrücken and St. Wendel. The city lies pk. 54 km southeast of Luxembourg and approx. 35 km northwest of Saarbrucken.