| Thar | |
| Pushpin Map: | France#France Normandy |
| Mouth Coordinates: | 48.8046°N -1.5702°W |
| Subdivision Type1: | Country |
| Length: | 24.8km (15.4miles) |
The Thar is a small river of France, in the administrative region Normandie, département de la Manche. It is 24.8km (15.4miles) long, rising to the east of La Haye-Pesnel and emptying into the Bay of Mont Saint-Michel, in the English Channel.
In the Middle Ages the Thar formed the traditional boundary between the Cotentin to the north and the Avranchin to the south.