| Saint-Sauveur-d'Aunis | |
| Commune Status: | Commune |
| Arrondissement: | La Rochelle |
| Canton: | Marans |
| Insee: | 17396 |
| Postal Code: | 17540 |
| Mayor: | Alain Fontanaud[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 46.2164°N -0.885°W |
| Elevation M: | 6 |
| Elevation Min M: | 2 |
| Elevation Max M: | 35 |
| Area Km2: | 19.66 |
Saint-Sauveur-d'Aunis (pronounced as /fr/, literally Saint-Sauveur of Aunis) is a commune in the Charente-Maritime department in the Nouvelle-Aquitaine region in southwestern France.