| Calmels-et-le-Viala | |
| Commune Status: | Commune |
| Arrondissement: | Millau |
| Canton: | Saint-Affrique |
| Insee: | 12042 |
| Postal Code: | 12400 |
| Mayor: | Anne-Marie Constans[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.9467°N 2.7531°W |
| Elevation M: | 350 |
| Elevation Min M: | 269 |
| Elevation Max M: | 574 |
| Area Km2: | 23.20 |
Calmels-et-le-Viala (in French pronounced as /kalmɛl e lə vjala/; Occitan (post 1500);: Caumèls e Lo Vialar) is a commune in the Aveyron department in southern France.
The commune is traversed by the Dourdou de Camarès River.