Sienne (river) should not be confused with Seine.
| Sienne | |
| Pushpin Map: | France Normandy#France |
| Mouth Coordinates: | 49.0061°N -1.5681°W |
| Subdivision Type1: | Country |
| Length: | 92.6km (57.5miles) |
The Sienne (in French pronounced as /sjɛn/) is a 92.6km (57.5miles) long river in northwestern France located in the departments of Calvados and Manche, Normandy. It flows into the English Channel near Regnéville-sur-Mer. Its longest tributaries are the Soulles and the Airou. The largest towns on the Sienne are Villedieu-les-Poêles and Quettreville-sur-Sienne.