| Agassac | |
| Commune Status: | Commune |
| Arrondissement: | Saint-Gaudens |
| Canton: | Cazères |
| Insee: | 31001 |
| Postal Code: | 31230 |
| Mayor: | Serge Ane[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Cœur et Coteaux du Comminges |
| Coordinates: | 43.3722°N 0.8883°W |
| Elevation M: | 250 |
| Elevation Min M: | 197 |
| Elevation Max M: | 336 |
| Area Km2: | 9.58 |
Agassac (in French pronounced as /aɡasak/) is a commune in the Haute-Garonne department in southwestern France.
The commune is bordered by five other communes: Martisserre to the north, Mauvezin to the east, Castelgaillard to the south Coueilles to the southwest, and finally by L'Isle-en-Dodon to the west.