Les Appalaches is a regional county municipality (RCM) in the Chaudière-Appalaches region in southeastern Quebec, Canada. It was established in 1982 from parts of the historic counties of Beauce, Frontenac, Mégantic, and Wolfe. The county seat and largest city is Thetford Mines.
- Country
- Canada
- Inception
- January 1, 1982
- Website
- https://www.mrcdesappalaches.ca/