| Municipality of Cerknica | |
| Native Name: | Občina Cerknica |
| Native Name Lang: | sl |
| Settlement Type: | Municipality |
| Coordinates: | 45.8°N 36°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Slovenia |
| Leader Title: | Mayor |
| Leader Name: | Marko Rupar (SDS) |
| Unit Pref: | Metric |
| Area Total Km2: | 241 |
| Population Footnotes: | [1] |
| Population Total: | 11,350 |
| Population As Of: | 2012 |
| Population Density Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +01 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +02 |
| Footnotes: | Source: Statistical Office of the Republic of Slovenia, census of 2002. |
The Municipality of Cerknica (pronounced as /sl/; sl|Občina Cerknica) is a municipality in the Karst region of southwestern Slovenia, with a population of 11,350 in 2012. The seat of the municipality is the town of Cerknica. It belongs to the traditional region of Inner Carniola.[2]
The best-known landmark of the municipality is Lake Cerknica, an intermittent lake and the largest lake in Slovenia, south of the town of Cerknica. Various watersports including windsurfing are popular on the lake.
In addition to the municipal seat of Cerknica, the municipality also includes the following settlements: