| Saint-Symphorien-de-Mahun | |
| Commune Status: | Commune |
| Arrondissement: | Tournon-sur-Rhône |
| Canton: | Haut-Vivarais |
| Insee: | 07299 |
| Postal Code: | 07290 |
| Mayor: | Xavier Balandrau[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Val d'Ay |
| Coordinates: | 45.165°N 4.5608°W |
| Elevation M: | 675 |
| Elevation Min M: | 539 |
| Elevation Max M: | 1286 |
| Area Km2: | 19.32 |
Saint-Symphorien-de-Mahun (in French pronounced as /sɛ̃ sɛ̃fɔʁjɛ̃ də maœ̃/; Occitan (post 1500);: Sant Safloriá) is a commune in the Ardèche department in southern France.