| Rouillon | |
| Commune Status: | Commune |
| Arrondissement: | Le Mans |
| Canton: | Le Mans-1 |
| Insee: | 72257 |
| Postal Code: | 72700 |
| Mayor: | Laurent Paris[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Le Mans Métropole |
| Coordinates: | 48.0083°N 0.1369°W |
| Elevation Min M: | 52 |
| Elevation Max M: | 127 |
| Area Km2: | 9.15 |
| Demonym: | Rouillonnais, Rouillonnaise |
Rouillon (in French pronounced as /ʁujɔ̃/) is a commune in the Sarthe department in the Pays de la Loire region in north-western France.