L'Islet (French pronunciation: [lilɛ]) is a regional county municipality in the Chaudière-Appalaches region of Quebec, Canada.

The county seat is Saint-Jean-Port-Joli.

There are 14 subdivisions within the RCM:[2]

Highways and numbered routes that run through the municipality, including external routes that start or finish at the county border:[4]

This Chaudière-Appalaches location article is a stub.