Lac-des-Îles
Lac-des-Îles may refer to:

 Lac des Îles (Beauce-Sartigan), lake in the region of Chaudière-Appalaches, Quebec, Canada
 Lac-des-Îles, Quebec, lake in the Laurentides region of Quebec
 Lac des Îles igneous complex, layered gabbroic intrusion in northwestern Ontario, Canada
 Lac des Îles (Saskatchewan), a lake in north-western Saskatchewan, Canada