La Grande-Trois is a Unincorporated area located in Baie-James; Jamésie, Quebec.

• Latitude: 53° 43' 52'' North   (decimal: 53.7311111)
• Longitude: 75° 58' 45'' West   (decimal: -75.9791667)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Lieu-dit
• Canadian Province/Territory: Quebec
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: La Grande-Trois
• GPS Coordinate Locator Map: La Grande-Trois Lat/Long