| Cernex | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Cernex.svg |
| Arrondissement: | Saint-Julien-en-Genevois |
| Canton: | La Roche-sur-Foron |
| Insee: | 74052 |
| Postal Code: | 74350 |
| Mayor: | Vincent Tissot[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC Pays de Cruseilles |
| Coordinates: | 46.065°N 6.0517°W |
| Elevation Min M: | 407 |
| Elevation Max M: | 857 |
| Area Km2: | 12.66 |
| Demonym: | Cernexiens |
| Website: | www.cernex.fr |
Cernex is a commune in the Haute-Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France.