| Manas-Bastanous | |
| Commune Status: | Commune |
| Arrondissement: | Mirande |
| Canton: | Mirande-Astarac |
| Insee: | 32226 |
| Postal Code: | 32170 |
| Mayor: | Michel Doneys[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.3728°N 0.3642°W |
| Elevation M: | 300 |
| Elevation Min M: | 204 |
| Elevation Max M: | 318 |
| Area Km2: | 7.54 |
Manas-Bastanous (in French pronounced as /manas bastanus/; Occitan (post 1500);: Manàs e Bastanós) is a commune in the Gers department in southwestern France.