| Aussillon | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Aussillon (Tarn).svg |
| Arrondissement: | Castres |
| Canton: | Mazamet-1 |
| Insee: | 81021 |
| Postal Code: | 81200 |
| Mayor: | Fabrice Cabral[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Castres Mazamet |
| Coordinates: | 43.4989°N 2.3658°W |
| Elevation M: | 330 |
| Elevation Min M: | 198 |
| Elevation Max M: | 805 |
| Area Km2: | 10.26 |
Aussillon is a commune in the Tarn department and Occitanie region of southern France.
The Thoré forms the commune's northern border.
The Château du Thoré is a large country house built in 1893–4 for Armand Puech, industrialist and inventor of a water filtration system. Surrounded by a very large park, the house is still inhabited today.
Its inhabitants are called Aussillonnais in French.