The Municipality of Ilirska Bistrica (; ) is a municipality in Slovenia. It belongs to the traditional region of Inner Carniola. The seat of the municipality is the town of Ilirska Bistrica.
The current municipality was established on 3 October 1994 from the former Municipality of Ilirska Bistrica without territorial changes. It borders Croatia.
In addition to the municipal seat of Ilirska Bistrica, the municipality also includes the following settlements: