Les Îles-Sainte-Marie is a Unincorporated area located in Côte-Nord-du-Golfe-du-Saint-Laurent; Basse-Côte-Nord, Quebec.

• Latitude: 50° 18' 2'' North   (decimal: 50.3006131)
• Longitude: 59° 39' 29'' West   (decimal: -59.6580589)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Hameau
• Canadian Province/Territory: Quebec
• Location: Côte-Nord-du-Golfe-du-Saint-Laurent; Basse-Côte-Nord
• Atlas of Canada Locator Map: Les Îles-Sainte-Marie
• GPS Coordinate Locator Map: Les Îles-Sainte-Marie Lat/Long