| Reignac | |
| Commune Status: | Commune |
| Arrondissement: | Blaye |
| Canton: | L'Estuaire |
| Insee: | 33351 |
| Postal Code: | 33860 |
| Mayor: | Pierre Renou[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Estuaire |
| Coordinates: | 45.2347°N -0.5061°W |
| Elevation M: | 62 |
| Elevation Min M: | 7 |
| Elevation Max M: | 65 |
| Area Km2: | 37.43 |
Reignac (pronounced as /fr/) is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France.