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