Otterbach is a former Verbandsgemeinde ("collective municipality") in the district of Kaiserslautern, Rhineland-Palatinate, Germany. The seat of the Verbandsgemeinde was in Otterbach. On 1 July 2014 it merged into the new Verbandsgemeinde Otterbach-Otterberg.
The Verbandsgemeinde Otterbach consisted of the following Ortsgemeinden ("local municipalities"):