| Lussan | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Lussan (Gers).svg |
| Arrondissement: | Auch |
| Canton: | Auch-2 |
| Insee: | 32221 |
| Postal Code: | 32270 |
| Mayor: | Éric Angelé[1] |
| Term: | 2024 - 2026 |
| Coordinates: | 43.6264°N 0.7353°W |
| Elevation M: | 185 |
| Elevation Min M: | 147 |
| Elevation Max M: | 264 |
| Area Km2: | 12.83 |
Lussan (in French pronounced as /lysɑ̃/; Occitan (post 1500);: Luçan) is a commune in the Gers department in southwestern France.