| Iton | |
| Map: | Iton (Eure).png |
| Mouth Coordinates: | 49.1747°N 1.1864°W |
| Subdivision Type1: | Country |
| Length: | 132km (82miles) |
| Basin Size: | 1300km2 |
Iton (in French pronounced as /itɔ̃/) is a river in Normandy, France, left tributary of the river Eure. It is 131.8km (81.9miles) long. Its source is near Moulins-la-Marche. For about 10 km between Orvaux and Glisolles, it disappears and pursues a subterranean course.
The Iton flows through the following départements and towns:
Bourth, Damville, La Bonneville-sur-Iton, Évreux
It flows into the Eure in Acquigny, south of Louviers.
Its basin (1,300 km²) covers 134 communes and is subject to a schéma d'aménagement et de gestion des eaux (water management scheme).