| Lairoux | |
| Commune Status: | Commune |
| Arrondissement: | Fontenay-le-Comte |
| Canton: | Luçon |
| Insee: | 85117 |
| Postal Code: | 85400 |
| Mayor: | Cédric Guinaudeau[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 46.4486°N -1.2656°W |
| Elevation Min M: | 0 |
| Elevation Max M: | 32 |
| Area Km2: | 13.19 |
Lairoux (in French pronounced as /lɛʁu/) is a commune in the Vendée department in the Pays de la Loire region in western France.
The river Lay forms all of the commune's western border.