Le Saint (French pronunciation: [lə sɛ̃]; Breton: Ar Sent) is a commune in the Morbihan department of Brittany in north-western France.

[3] The municipality launched a Breton linguistic plan through Ya d'ar brezhoneg on 24 February 2005.

Le Saint is located in the northwestern part of Morbihan, 40 km (25 mi) north of Lorient.

The two rivers meet at the southern end of the commune at a place called Pont Briand.

The lords of Faouët, the Bouteville, lived in their castle in Le Saint in the fifteenth century.