| Lonzac | |
| Commune Status: | Commune |
| Arrondissement: | Jonzac |
| Canton: | Jonzac |
| Insee: | 17209 |
| Postal Code: | 17520 |
| Mayor: | Paul Bergier[1] |
| Term: | 2023 - 2026 |
| Coordinates: | 45.5964°N -0.3917°W |
| Elevation M: | 35 |
| Elevation Min M: | 19 |
| Elevation Max M: | 80 |
| Area Km2: | 6.24 |
Lonzac (in French pronounced as /lɔ̃zak/) is a commune in the Charente-Maritime department in the Nouvelle-Aquitaine region in southwestern France.