| Jallans | |
| Commune Status: | Commune |
| Arrondissement: | Châteaudun |
| Canton: | Châteaudun |
| Insee: | 28198 |
| Postal Code: | 28200 |
| Mayor: | Olivier Lecomte[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 48.0758°N 1.3717°W |
| Elevation M: | 127 |
| Elevation Min M: | 118 |
| Elevation Max M: | 134 |
| Area Km2: | 8.99 |
Jallans (in French pronounced as /ʒalɑ̃/) is a commune in the Eure-et-Loir department in the Centre-Val de Loire region in northern France.