| Passavant-sur-Layon | |
| Commune Status: | Commune |
| Arrondissement: | Cholet |
| Canton: | Cholet-2 |
| Insee: | 49236 |
| Postal Code: | 49560 |
| Mayor: | Olivier Lecomte[1] |
| Term: | 2023 - 2026 |
| Intercommunality: | CA Choletais |
| Coordinates: | 47.1075°N -0.3878°W |
| Elevation M: | 91 |
| Elevation Min M: | 62 |
| Elevation Max M: | 112 |
| Area Km2: | 4.91 |
| Demonym: | Passavantais, Passavantaise |
Passavant-sur-Layon (in French pronounced as /pasavɑ̃ syʁ lɛjɔ̃/, literally Passavant on Layon) is a commune in the Maine-et-Loire department in western France.
The commune is traversed by the river Layon.