| Chay | |
| Commune Status: | Commune |
| Coordinates: | 47.0356°N 5.8617°W |
| Insee: | 25143 |
| Postal Code: | 25440 |
| Arrondissement: | Besançon |
| Canton: | Saint-Vit |
| Mayor: | Jean-Pierre Cunchon[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Loue-Lison |
| Elevation Min M: | 245 |
| Elevation Max M: | 502 |
| Area Km2: | 6.54 |
Chay (in French pronounced as /ʃaj/) is a commune in the Doubs department in the Bourgogne-Franche-Comté region in eastern France.