| Gréez-sur-Roc | |
| Commune Status: | Commune |
| Arrondissement: | Mamers |
| Canton: | Saint-Calais |
| Insee: | 72144 |
| Postal Code: | 72320 |
| Mayor: | Myriam Morand[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays de l'Huisne Sarthoise |
| Coordinates: | 48.1378°N 0.7947°W |
| Elevation Min M: | 251 |
| Elevation Max M: | 160 |
| Area Km2: | 25.38 |
Gréez-sur-Roc is a commune in the Sarthe department in the region of Pays de la Loire in north-western France.