| Belcastel | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Belcastel (Tarn).svg |
| Arrondissement: | Castres |
| Canton: | Lavaur Cocagne |
| Insee: | 81025 |
| Postal Code: | 81500 |
| Mayor: | Christophe Esparbié[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.65°N 1.7569°W |
| Elevation M: | 210 |
| Elevation Min M: | 173 |
| Elevation Max M: | 271 |
| Area Km2: | 10.81 |
Belcastel (in French pronounced as /bɛlkastɛl/;, meaning beautiful castle) is a commune of the Tarn department of southern France.