| Courdemanche | |
| Commune Status: | Commune |
| Arrondissement: | Évreux |
| Canton: | Verneuil d'Avre et d'Iton |
| Insee: | 27181 |
| Postal Code: | 27320 |
| Mayor: | Jocelyne Néant[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Évreux Portes de Normandie |
| Coordinates: | 48.8028°N 1.2642°W |
| Elevation M: | 136 |
| Elevation Min M: | 110 |
| Elevation Max M: | 142 |
| Area Km2: | 8.99 |
Courdemanche (in French pronounced as /kuʁdəmɑ̃ʃ/) is a commune in the Eure department in northern France.