Otterbach is a Verbandsgemeinde ("collective municipality") in the district of Kaiserslautern, Rhineland-Palatinate, Germany. The seat of the Verbandsgemeinde is in Otterbach.
The Verbandsgemeinde Otterbach consists of the following Ortsgemeinden ("local municipalities"):
- Frankelbach
- Hirschhorn
- Katzweiler
- Mehlbach
- Olsbrücken
- Otterbach
- Sulzbachtal
Coordinates: 49°28′59″N 7°43′59″E / 49.483°N 7.733°E / 49.483; 7.733