Saint-Derrien
| Saint-Derrien Sant-Derc'hen | |
|---|---|
| The church in Saint-Derrien | |
| Location of Saint-Derrien | |
| Coordinates: 48°32′58″N 4°10′47″W / 48.5494°N 4.1797°W | |
| Country | France | 
| Region | Brittany | 
| Department | Finistère | 
| Arrondissement | Morlaix | 
| Canton | Landivisiau | 
| Intercommunality | Pays de Landivisiau | 
| Government | |
| • Mayor (2020–2026) | Dominique Pot | 
| Area 1 | 12.28 km2 (4.74 sq mi) | 
| Population  (2022) | 846 | 
| • Density | 69/km2 (180/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| INSEE/Postal code | 29244 /29440 | 
| Elevation | 39–107 m (128–351 ft) | 
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Saint-Derrien (French pronunciation: [sɛ̃ dɛʁjɛ̃]; Breton: Sant-Derc'hen) is a commune in the Finistère department of Brittany in north-western France.