| Saint-Aunix-Lengros | |
| Commune Status: | Commune |
| Arrondissement: | Mirande |
| Canton: | Pardiac-Rivière-Basse |
| Insee: | 32362 |
| Postal Code: | 32160 |
| Mayor: | Sandie Lefetz[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.5789°N 0.0525°W |
| Elevation M: | 140 |
| Elevation Min M: | 131 |
| Elevation Max M: | 202 |
| Area Km2: | 5.36 |
Saint-Aunix-Lengros is a commune in the Gers department in southwestern France.