| Les Landes-Genusson | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Les Landes-Genusson.svg |
| Arrondissement: | La Roche-sur-Yon |
| Canton: | Mortagne-sur-Sèvre |
| Insee: | 85119 |
| Postal Code: | 85130 |
| Mayor: | Guy Girard[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays de Mortagne |
| Coordinates: | 46.9664°N -1.1172°W |
| Elevation Min M: | 53 |
| Elevation Max M: | 121 |
| Area Km2: | 31.33 |
Les Landes-Genusson (in French pronounced as /le lɑ̃d ʒənysɔ̃/) is a commune in the Vendée department in the Pays de la Loire region in western France.
Les Landes-Genusson has an oceanic climate (Köppen climate classification Cfb). The average annual temperature in Les Landes-Genusson is . The average annual rainfall is with November as the wettest month. The temperatures are highest on average in August, at around, and lowest in January, at around . The highest temperature ever recorded in Les Landes-Genusson was on 5 August 2003; the coldest temperature ever recorded was on 1 March 2005.