| Le Mesnil-au-Grain | |
| Commune Status: | Commune |
| Arrondissement: | Vire |
| Canton: | Les Monts d'Aunay |
| Insee: | 14412 |
| Postal Code: | 14260 |
| Mayor: | Annick Solier[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pré-Bocage Intercom |
| Coordinates: | 49.045°N -0.5983°W |
| Elevation M: | 150 |
| Elevation Min M: | 88 |
| Elevation Max M: | 197 |
| Area Km2: | 4.30 |
Le Mesnil-au-Grain (in French pronounced as /lə menil o ɡʁɛ̃/) is a commune in the Calvados department in the Normandy region in northwestern France.