| Gajac | |
| Commune Status: | Commune |
| Arrondissement: | Langon |
| Canton: | Le Sud-Gironde |
| Insee: | 33178 |
| Postal Code: | 33430 |
| Mayor: | Pascal Losse[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Bazadais |
| Coordinates: | 44.4375°N -0.1286°W |
| Elevation M: | 132 |
| Elevation Min M: | 36 |
| Elevation Max M: | 144 |
| Area Km2: | 12.28 |
Gajac (in French pronounced as /ɡaʒak/) is a commune in the Gironde department in southwestern France.