| Jassans-Riottier | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Jassans-Riottier (Ain).svg |
| Arrondissement: | Bourg-en-Bresse |
| Canton: | Trévoux |
| Insee: | 01194 |
| Postal Code: | 01480 |
| Mayor: | Jean-Pierre Reverchon[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Villefranche Beaujolais Saône |
| Coordinates: | 45.9861°N 4.7575°W |
| Elevation M: | 175 |
| Elevation Min M: | 167 |
| Elevation Max M: | 249 |
| Area Km2: | 4.81 |
Jassans-Riottier (pronounced as /fr/), known colloquially as Jassans, is a commune in the Ain department in eastern France.
Jassans is located in the south-western part of the Ain department in the fertile Val de Saône some 35 km north of Lyon and 2 km east of Villefranche-sur-Saône.