| Vailly | |
| Commune Status: | Commune |
| Arrondissement: | Troyes |
| Canton: | Creney-près-Troyes |
| Insee: | 10391 |
| Postal Code: | 10150 |
| Mayor: | William Handel[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Troyes Champagne Métropole |
| Coordinates: | 48.3703°N 4.1225°W |
| Elevation M: | 141 |
| Elevation Min M: | 123 |
| Elevation Max M: | 215 |
| Area Km2: | 11.25 |
Vailly (pronounced as /fr/) is a commune in the Aube department in north-central France.