La Grande Île is a Island located in Lac-Matapédia; La Matapédia, Quebec.

• Latitude: 48° 32' 13'' North   (decimal: 48.5369887)
• Longitude: 67° 30' 27'' West   (decimal: -67.5074951)
• Topography Feature Category: Island
• Geographical Feature: Île / Ile
• Canadian Province/Territory: Quebec
• Location: Lac-Matapédia; La Matapédia
• Atlas of Canada Locator Map: La Grande Île
• GPS Coordinate Locator Map: La Grande Île Lat/Long