| Bayon-sur-Gironde | |
| Commune Status: | Commune |
| Arrondissement: | Blaye |
| Canton: | L'Estuaire |
| Insee: | 33035 |
| Postal Code: | 33710 |
| Mayor: | Hervé Gayrard[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 45.0547°N -0.5992°W |
| Elevation M: | 47 |
| Elevation Min M: | 0 |
| Elevation Max M: | 82 |
| Area Km2: | 5.7 |
Bayon-sur-Gironde (in French pronounced as /bajɔ̃ syʁ ʒiʁɔ̃d/, literally Bayon on Gironde; Occitan (post 1500);: Baion) is a commune in the Gironde department in southwestern France.