| Cailla | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Cailla (Aude).svg |
| Arrondissement: | Limoux |
| Canton: | La Haute-Vallée de l'Aude |
| Insee: | 11060 |
| Postal Code: | 11140 |
| Mayor: | Alfred Vismara[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pyrénées Audoises |
| Coordinates: | 42.8156°N 2.1975°W |
| Elevation M: | 400 |
| Elevation Min M: | 387 |
| Elevation Max M: | 1240 |
| Area Km2: | 7.64 |
Cailla (in French pronounced as /kaja/; Occitan (post 1500);: Calhan) is a commune in the Aude department in southern France.