| Cassagnabère-Tournas | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Cassagnabère-Tournas (Haute-Garonne).svg |
| Arrondissement: | Saint-Gaudens |
| Canton: | Cazères |
| Insee: | 31109 |
| Postal Code: | 31420 |
| Mayor: | Philippe Vignes[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Cœur et Coteaux du Comminges |
| Coordinates: | 43.1989°N 0.7917°W |
| Elevation M: | 390 |
| Elevation Min M: | 286 |
| Elevation Max M: | 422 |
| Area Km2: | 25.24 |
Cassagnabère-Tournas is a commune in the Haute-Garonne department in southwestern France.