| Le Sen | |
| Commune Status: | Commune |
| Arrondissement: | Mont-de-Marsan |
| Canton: | Haute Lande Armagnac |
| Insee: | 40297 |
| Postal Code: | 40420 |
| Mayor: | Jean-Pierre Puybaraud[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Cœur Haute Lande |
| Coordinates: | 44.1275°N -0.4997°W |
| Elevation M: | 87 |
| Elevation Min M: | 88 |
| Elevation Max M: | 123 |
| Area Km2: | 51.1 |
Le Sen is a commune in the Landes department in Nouvelle-Aquitaine in southwestern France.[2]