Lac Loudon is a Lake located in Baie-James; Jamésie, Quebec and has an elevation of 392 meters.

• Latitude: 49° 13' 6'' North   (decimal: 49.2183333)
• Longitude: 74° 57' 36'' West   (decimal: -74.96)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 392 meters
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac Loudon
• GPS Coordinate Locator Map: Lac Loudon Lat/Long