La Grande Île is a Island located in Rivière-de-la-Savane; Mékinac, Quebec.

• Latitude: 47° 10' 13'' North   (decimal: 47.1703237)
• Longitude: 73° 46' 15'' West   (decimal: -73.7709709)
• Topography Feature Category: Island
• Geographical Feature: Île / Ile
• Canadian Province/Territory: Quebec
• Location: Rivière-de-la-Savane; Mékinac
• Atlas of Canada Locator Map: La Grande Île
• GPS Coordinate Locator Map: La Grande Île Lat/Long