| Donnazac | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Donnazac 81.svg |
| Arrondissement: | Albi |
| Canton: | Carmaux-2 Vallée du Cérou |
| Insee: | 81080 |
| Postal Code: | 81170 |
| Mayor: | Caroline Breuillard[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC du Cordais et du Causse |
| Coordinates: | 44.0153°N 1.9458°W |
| Elevation M: | 292 |
| Elevation Min M: | 244 |
| Elevation Max M: | 301 |
| Area Km2: | 4.74 |
Donnazac (in French pronounced as /dɔnazak/; Occitan (post 1500);: Donasac) is a commune in the Tarn department in southern France.