| Vailly | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Vailly 74.svg |
| Arrondissement: | Thonon-les-Bains |
| Canton: | Thonon-les-Bains |
| Insee: | 74287 |
| Postal Code: | 74470 |
| Mayor: | Yannick Trabichet[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Haut-Chablais |
| Coordinates: | 46.305°N 6.545°W |
| Elevation Min M: | 630 |
| Elevation Max M: | 1894 |
| Area Km2: | 18.89 |
| Demonym: | Vailliérand / Vailliérande |
| Website: | Vailly74.fr |
Vailly (in French pronounced as /vaji/; Vâlyi) is a commune in the Haute-Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France.