La Chapelle-de-Brain
La Chapelle-de-Brain 
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Town hall  | |
Location of La Chapelle-de-Brain  | |
| Coordinates: 47°42′03″N 1°56′00″W / 47.7008°N 1.9333°W | |
| Country | France | 
| Region | Brittany | 
| Department | Ille-et-Vilaine | 
| Arrondissement | Redon | 
| Canton | Redon | 
| Intercommunality | Redon Agglomération | 
| Government | |
| • Mayor (2020–2026) | Yohann Morisot | 
Area 1  | 17.65 km2 (6.81 sq mi) | 
| Population  (2022)  | 1,107 | 
| • Density | 63/km2 (160/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| INSEE/Postal code | 35064 /35660  | 
| Elevation | 1–70 m (3.3–229.7 ft) | 
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
La Chapelle-de-Brain (French pronunciation: [la ʃapɛl də bʁɛ̃] ⓘ; Breton: Chapel-Braen) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France.