| Plassac | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Plassac (Gironde).svg |
| Arrondissement: | Blaye |
| Canton: | L'Estuaire |
| Insee: | 33325 |
| Postal Code: | 33390 |
| Mayor: | Jean-Louis Bernard[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Blaye |
| Coordinates: | 45.1044°N -0.6458°W |
| Elevation M: | 20 |
| Elevation Min M: | 0 |
| Elevation Max M: | 79 |
| Area Km2: | 7.12 |
Plassac (in French pronounced as /plasak/) is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France.