Hahnweiler is an Ortsgemeinde, or municipality, located in the Birkenfeld district within the state of Rhineland-Palatinate, Germany. It functions as a constituent part of the Verbandsgemeinde of Baumholder, which is a type of collective municipality.
The administrative seat for the Verbandsgemeinde to which Hahnweiler belongs is situated in the town of Baumholder. The village serves as a local community within this regional administrative structure in western Germany.