| Chaillé-sous-les-Ormeaux | |
| Arrondissement: | La Roche-sur-Yon |
| Canton: | Mareuil-sur-Lay-Dissais |
| Insee: | 85043 |
| Postal Code: | 85310 |
| Commune: | Rives-de-l'Yon |
| Coordinates: | 46.5842°N -1.3672°W |
| Elevation Min M: | 6 |
| Elevation Max M: | 77 |
| Area Km2: | 17.50 |
| Population: | 1359 |
| Population Date: | 2019 |
| Population Footnotes: | [1] |
Chaillé-sous-les-Ormeaux (in French pronounced as /ʃaje su le.z‿ɔʁmo/) is a former commune in the Vendée department in the Pays de la Loire region in western France. On 1 January 2016, it was merged into the new commune of Rives-de-l'Yon.[2]
The village lies above the right bank of the river Yon, which forms most of the commune's eastern border.