| Castanet-Tolosan | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Castanet-Tolosan (Haute-Garonne).svg |
| Arrondissement: | Toulouse |
| Canton: | Castanet-Tolosan |
| Insee: | 31113 |
| Postal Code: | 31320 |
| Mayor: | Xavier Normand[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Sicoval |
| Coordinates: | 43.5164°N 1.4989°W |
| Elevation M: | 164 |
| Elevation Min M: | 145 |
| Elevation Max M: | 281 |
| Area Km2: | 8.22 |
| Website: | Official website |
Castanet-Tolosan (pronounced as /fr/; oc|Castanet Tolosan) is a commune in the Haute-Garonne department in southwestern France.