| Saint-Jean-le-Vieux | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Saint-Jean-le-Vieux (Ain).svg |
| Arrondissement: | Nantua |
| Canton: | Pont-d'Ain |
| Insee: | 01363 |
| Postal Code: | 01640 |
| Mayor: | Christian Batailly[1] |
| Term: | 2020 - 2026 |
| Party: | DVD |
| Coordinates: | 46.0294°N 5.39°W |
| Elevation M: | 275 |
| Elevation Min M: | 236 |
| Elevation Max M: | 506 |
| Area Km2: | 15.2 |
Saint-Jean-le-Vieux (in French pronounced as /sɛ̃ ʒɑ̃ lə vjø/) is a commune in the Ain department in the Auvergne-Rhône-Alpes region in Eastern France.