| Grainville-sur-Odon | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Grainville-sur-Odon (Calvados).svg |
| Arrondissement: | Caen |
| Canton: | Évrecy |
| Insee: | 14311 |
| Postal Code: | 14210 |
| Mayor: | Emmanuel Maurice[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 49.1389°N -0.5283°W |
| Elevation M: | 115 |
| Elevation Min M: | 46 |
| Elevation Max M: | 119 |
| Area Km2: | 5.26 |
Grainville-sur-Odon (in French pronounced as /ɡʁɛ̃vil syʁ ɔdɔ̃/, literally Grainville on Odon) is a commune in the Calvados department in the Normandy region in northwestern France.