Île Mistassini is a Island located in Baie-James; Jamésie, Quebec and has an elevation of 396 meters.

• Latitude: 50° 57' 18'' North   (decimal: 50.955)
• Longitude: 73° 49' 38'' West   (decimal: -73.8272222)
• Topography Feature Category: Island
• Geographical Feature: Île / Ile
• Canadian Province/Territory: Quebec
• Elevation: 396 meters
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Île Mistassini
• GPS Coordinate Locator Map: Île Mistassini Lat/Long