| Lasséran | |
| Commune Status: | Commune |
| Arrondissement: | Mirande |
| Canton: | Auch-1 |
| Insee: | 32200 |
| Postal Code: | 32550 |
| Mayor: | Michel Soriano[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Val de Gers |
| Coordinates: | 43.5928°N 0.5381°W |
| Elevation M: | 149 |
| Elevation Min M: | 144 |
| Elevation Max M: | 262 |
| Area Km2: | 15.06 |
Lasséran (in French pronounced as /laseʁɑ̃/; Occitan (post 1500);: Lasseran) is a commune in the Gers department in southwestern France.