| Cierzac | |
| Commune Status: | Commune |
| Arrondissement: | Jonzac |
| Canton: | Jonzac |
| Insee: | 17106 |
| Postal Code: | 17520 |
| Mayor: | Laurent Bigey[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 45.57°N -0.3114°W |
| Elevation M: | 27 |
| Elevation Min M: | 18 |
| Elevation Max M: | 49 |
| Area Km2: | 5.2 |
Cierzac (in French pronounced as /sjɛʁzak/) is a commune in the Charente-Maritime department in the Nouvelle-Aquitaine region in southwestern France.