Mettweiler is an Ortsgemeinde, or municipality, located in the Birkenfeld district within the state of Rhineland-Palatinate, Germany. It functions as a member of the Verbandsgemeinde of Baumholder, which is a collective municipality whose administrative seat is situated in the town of Baumholder.
The village serves as a local administrative unit within its respective district and region. Its primary organizational structure is defined by its membership in the larger collective municipality governing the area.