| Saint-Jean-sur-Reyssouze | |
| Commune Status: | Commune |
| Arrondissement: | Bourg-en-Bresse |
| Canton: | Replonges |
| Insee: | 01364 |
| Postal Code: | 01560 |
| Mayor: | Jacques Sallet[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Bassin de Bourg-en-Bresse |
| Coordinates: | 46.3969°N 5.0633°W |
| Elevation M: | 192 |
| Elevation Min M: | 178 |
| Elevation Max M: | 218 |
| Area Km2: | 27.48 |
Saint-Jean-sur-Reyssouze (in French pronounced as /sɛ̃ ʒɑ̃ syʁ ʁɛsuz/, literally Saint-Jean on Reyssouze) is a commune in the Ain department in eastern France.