| Porte-de-Seine | |
| Commune Status: | Commune |
| Arrondissement: | Les Andelys |
| Canton: | Val-de-Reuil |
| Insee: | 27471 |
| Postal Code: | 27100, 27430 |
| Intercommunality: | CA Seine-Eure |
| Coordinates: | 49.2464°N 1.2556°W |
| Area Km2: | 12.56 |
Porte-de-Seine is a commune in the department of Eure, northern France. The municipality was established on 1 January 2018 by merger of the former communes of Porte-Joie (the seat) and Tournedos-sur-Seine.[1]