| Fustérouau | |
| Commune Status: | Commune |
| Arrondissement: | Mirande |
| Canton: | Adour-Gersoise |
| Insee: | 32135 |
| Postal Code: | 32400 |
| Mayor: | Jean-Pierre Musset[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.6872°N 0.0039°W |
| Elevation M: | 115 |
| Elevation Min M: | 103 |
| Elevation Max M: | 196 |
| Area Km2: | 7.85 |
Fustérouau (in French pronounced as /fysteʁwo/; Occitan (post 1500);: Fustarroau) is a commune in the Gers department in southwestern France.