| Châtillon-en-Diois | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Châtillon-en-Diois (Drôme).svg |
| Arrondissement: | Die |
| Canton: | Le Diois |
| Insee: | 26086 |
| Postal Code: | 26410 |
| Mayor: | Éric Vanoni[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Diois |
| Coordinates: | 44.6956°N 5.4847°W |
| Elevation Min M: | 514 |
| Elevation Max M: | 2038 |
| Area Km2: | 110.06 |
Châtillon-en-Diois is a commune in the Drôme department in southeastern France. On 1 January 2019, the former commune Treschenu-Creyers was merged into Châtillon-en-Diois.[2]
Population data refer to the commune in its geography as of January 2023.