Le Guerno
Le Guerno 
    Ar Gwernoù  | |
|---|---|
A barred window of the church  | |
Location of Le Guerno  | |
| Coordinates: 47°35′02″N 2°24′25″W / 47.5839°N 2.4069°W | |
| Country | France | 
| Region | Brittany | 
| Department | Morbihan | 
| Arrondissement | Vannes | 
| Canton | Muzillac | 
| Intercommunality | Arc Sud Bretagne | 
| Government | |
| • Mayor (2020–2026) | Gérard Guillotin | 
Area 1  | 9.75 km2 (3.76 sq mi) | 
| Population  (2022)  | 975 | 
| • Density | 100/km2 (260/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| INSEE/Postal code | 56077 /56190  | 
| Elevation | 45–86 m (148–282 ft) | 
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Le Guerno (French pronunciation: [lə ɡɛʁno] or [lə ɡɥɛʁno]; Breton: Ar Gwernoù) is a commune in the Morbihan department of Brittany in north-western France. Inhabitants of Le Guerno are called Guernotais.