| Unac | |
| Commune Status: | Commune |
| Arrondissement: | Foix |
| Canton: | Haute-Ariège |
| Insee: | 09318 |
| Postal Code: | 09250 |
| Mayor: | Christophe Langlade[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 42.7619°N 1.7758°W |
| Elevation M: | 640 |
| Elevation Min M: | 598 |
| Elevation Max M: | 1160 |
| Area Km2: | 2.65 |
Unac (in French pronounced as /ynak/) is a commune in the Ariège department in southwestern France.