| Losse | |
| Commune Status: | Commune |
| Arrondissement: | Mont-de-Marsan |
| Canton: | Haute Lande Armagnac |
| Insee: | 40158 |
| Postal Code: | 40240 |
| Mayor: | Bruno Lacoste[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Landes d'Armagnac |
| Coordinates: | 44.11°N -0.1017°W |
| Elevation M: | 152 |
| Elevation Min M: | 95 |
| Elevation Max M: | 157 |
| Area Km2: | 102.69 |
Losse (in French pronounced as /lɔs/; Occitan (post 1500);: Lòssa) is a commune in the Landes department in Nouvelle-Aquitaine in south-western France.