| Cernay | |
| Commune Status: | Commune |
| Arrondissement: | Chartres |
| Canton: | Illiers-Combray |
| Insee: | 28067 |
| Postal Code: | 28120 |
| Mayor: | Marie-Paule Dos Reis[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 48.3853°N 1.2428°W |
| Elevation M: | 185 |
| Elevation Min M: | 171 |
| Elevation Max M: | 201 |
| Area Km2: | 7.89 |
Cernay (in French pronounced as /sɛʁnɛ/) is a commune in the Eure-et-Loir department in northern France.