| Saint-Sébastien-de-Morsent | |
| Commune Status: | Commune |
| Arrondissement: | Évreux |
| Canton: | Évreux-1 |
| Insee: | 27602 |
| Postal Code: | 27180 |
| Mayor: | Florence Haguet Volckaert[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Évreux Portes de Normandie |
| Coordinates: | 49.0094°N 1.0903°W |
| Elevation M: | 114 |
| Elevation Min M: | 75 |
| Elevation Max M: | 137 |
| Area Km2: | 10.02 |
Saint-Sébastien-de-Morsent (pronounced as /fr/) is a commune in the Eure department in the Normandy region in northern France.