| Castanet | |
| Commune Status: | Commune |
| Arrondissement: | Albi |
| Canton: | Les Deux Rives |
| Insee: | 81061 |
| Postal Code: | 81150 |
| Mayor: | Max Escaffre[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Gaillac-Graulhet |
| Coordinates: | 43.9758°N 2.0303°W |
| Elevation M: | 270 |
| Elevation Min M: | 188 |
| Elevation Max M: | 302 |
| Area Km2: | 7.21 |
Castanet is a commune in the Tarn department in southern France.