Brennilis
| Brennilis Brenniliz | |
|---|---|
| The Saint-Michel reservoir in Brennilis | |
| Location of Brennilis | |
| Coordinates: 48°21′30″N 3°50′59″W / 48.3583°N 3.8497°W | |
| Country | France | 
| Region | Brittany | 
| Department | Finistère | 
| Arrondissement | Châteaulin | 
| Canton | Carhaix-Plouguer | 
| Intercommunality | Monts d'Arrée Communauté | 
| Government | |
| • Mayor (2020–2026) | Alexis Manac'h | 
| Area 1 | 18.69 km2 (7.22 sq mi) | 
| Population  (2022) | 447 | 
| • Density | 24/km2 (62/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| INSEE/Postal code | 29018 /29690 | 
| Elevation | 149–278 m (489–912 ft) | 
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Brennilis (French pronunciation: [bʁɛnilis]; Breton: Brenniliz) is a commune in the Finistère department of Brittany in northwestern France.