Mettlach is a municipality in the district Merzig-Wadern, in Saarland, Germany, situated on the river Saar, approximately 7 km (4.3 mi) northwest of Merzig, and 30 km (19 mi) south of Trier. The headquarters of Villeroy & Boch are in Mettlach. Also, the Mettlach tiles are named after the municipality.