| Gaillères | |
| Commune Status: | Commune |
| Arrondissement: | Mont-de-Marsan |
| Canton: | Mont-de-Marsan-1 |
| Insee: | 40103 |
| Postal Code: | 40090 |
| Mayor: | Catherine Bergalet[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Mont-de-Marsan Agglomération |
| Coordinates: | 43.9414°N -0.3717°W |
| Elevation Min M: | 63 |
| Elevation Max M: | 102 |
| Area Km2: | 14.04 |
Gaillères (in French pronounced as /ɡajɛʁ/; Occitan (post 1500);: Galhèra) is a commune in the Landes department in Nouvelle-Aquitaine in southwestern France.[2]