| Brains-sur-les-Marches | |
| Commune Status: | Commune |
| Arrondissement: | Château-Gontier |
| Canton: | Cossé-le-Vivien |
| Mayor: | Vanessa Sorieux[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 47.8872°N -1.1803°W |
| Elevation Min M: | 72 |
| Elevation Max M: | 109 |
| Area Km2: | 7.68 |
| Insee: | 53041 |
| Postal Code: | 53350 |
Brains-sur-les-Marches (in French pronounced as /bʁɛ̃ syʁ le maʁʃ/) is a commune in the Mayenne department in northwestern France.