| Tossiat | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Tossiat (Ain).svg |
| Arrondissement: | Bourg-en-Bresse |
| Canton: | Ceyzériat |
| Insee: | 01422 |
| Postal Code: | 01250 |
| Mayor: | Jean-Marie Davi[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Bassin de Bourg-en-Bresse |
| Coordinates: | 46.1419°N 5.3158°W |
| Elevation Min M: | 244 |
| Elevation Max M: | 501 |
| Area Km2: | 10.17 |
Tossiat (in French pronounced as /tɔsja/) is a commune in the Ain department in eastern France.