| Rossillon | |
| Commune Status: | Commune |
| Arrondissement: | Belley |
| Canton: | Belley |
| Insee: | 01329 |
| Postal Code: | 01510 |
| Mayor: | Georges Bouvier[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 45.8333°N 5.6°W |
| Elevation M: | 330 |
| Elevation Min M: | 324 |
| Elevation Max M: | 1022 |
| Area Km2: | 8.07 |
Rossillon (in French pronounced as /ʁɔsijɔ̃/) is a commune in the Ain department in eastern France.