| Brain-sur-Allonnes | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Brain-sur-Allonnes (Maine-et-Loire).svg |
| Arrondissement: | Saumur |
| Canton: | Longué-Jumelles |
| Insee: | 49041 |
| Postal Code: | 49650 |
| Mayor: | Yves Boucher[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Saumur Val de Loire |
| Coordinates: | 47.3031°N 0.0661°W |
| Elevation M: | 46 |
| Elevation Min M: | 23 |
| Elevation Max M: | 111 |
| Area Km2: | 33.32 |
Brain-sur-Allonnes (in French pronounced as /bʁɛ̃ syʁ alɔn/, literally Brain on Allonnes) is a commune in the Maine-et-Loire department in western France.