| Saint-Aignan | |
| Commune Status: | Commune |
| Arrondissement: | Libourne |
| Canton: | Le Libournais-Fronsadais |
| Insee: | 33365 |
| Postal Code: | 33126 |
| Mayor: | Sylvie Mondon[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Fronsadais |
| Coordinates: | 44.9447°N -0.2972°W |
| Elevation M: | 77 |
| Elevation Min M: | 28 |
| Elevation Max M: | 88 |
| Area Km2: | 2.75 |
Saint-Aignan (pronounced as /fr/; oc|Sent Anhan) is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France.