| Saint-Cernin-de-l'Herm | |
| Commune Status: | Commune |
| Arrondissement: | Sarlat-la-Canéda |
| Canton: | Vallée Dordogne |
| Insee: | 24386 |
| Postal Code: | 24550 |
| Mayor: | Daniel Conchou[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 44.6414°N 1.035°W |
| Elevation M: | 166 |
| Elevation Min M: | 146 |
| Elevation Max M: | 306 |
| Area Km2: | 16.25 |
Saint-Cernin-de-l'Herm (in French pronounced as /sɛ̃ sɛʁnɛ̃ də lɛʁm/; Occitan (post 1500);: Sent Sarnin de l'Èrm) is a commune in the Dordogne department in Nouvelle-Aquitaine in southwestern France.