| Bayac | |
| Commune Status: | Commune |
| Arrondissement: | Bergerac |
| Canton: | Lalinde |
| Insee: | 24027 |
| Postal Code: | 24150 |
| Mayor: | Annick Carot[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 44.8044°N 0.7269°W |
| Elevation M: | 53 |
| Elevation Min M: | 42 |
| Elevation Max M: | 173 |
| Area Km2: | 10.23 |
Bayac (in French pronounced as /bajak/; Occitan (post 1500);: Baiac) is a commune in the Dordogne department in southwestern France.