Weilerbach is a Verbandsgemeinde ("collective municipality") in the district of Kaiserslautern, Rhineland-Palatinate, Germany. The seat of the Verbandsgemeinde is in Weilerbach.

The Verbandsgemeinde Weilerbach consists of the following Ortsgemeinden ("local municipalities"):

  1. Erzenhausen
  2. Eulenbis
  3. Kollweiler
  4. Mackenbach
  5. Reichenbach-Steegen
  6. Rodenbach
  7. Schwedelbach
  8. Weilerbach

49°28′59″N 7°37′59″E/49.483°N 7.633°E/ 49.483; 7.633