| Châtenay-sur-Seine | |
| Commune Status: | Commune |
| Coordinates: | 48.4208°N 3.1°W |
| Insee: | 77101 |
| Postal Code: | 77126 |
| Arrondissement: | Provins |
| Canton: | Provins |
| Mayor: | Stéphanie Banos[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC Bassée - Montois |
| Elevation Min M: | 49 |
| Elevation Max M: | 118 |
| Area Km2: | 13.01 |
Châtenay-sur-Seine (pronounced as /fr/, literally Châtenay on Seine) is a commune in the Seine-et-Marne department in the Île-de-France region in north-central France.
The inhabitants are called Châtenaysiens.