| Saint-Pierre-le-Vieux | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Saint-Pierre-le-Vieux.svg |
| Arrondissement: | Fontenay-le-Comte |
| Canton: | Fontenay-le-Comte |
| Insee: | 85265 |
| Postal Code: | 85420 |
| Mayor: | Christian Henriet[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Vendée Sèvre Autise |
| Coordinates: | 46.3872°N -0.7483°W |
| Elevation Min M: | 0 |
| Elevation Max M: | 25 |
| Area Km2: | 23.19 |
Saint-Pierre-le-Vieux (in French pronounced as /sɛ̃ pjɛʁ lə vjø/) is a commune in the Vendée department in the Pays de la Loire region in western France.