Truesdell Island is a Island located in Mackenzie, Northwest Territories and has an elevation of 116 meters.

• Latitude: 61° 50' 30'' North   (decimal: 61.8417637)
• Longitude: 121° 18' 35'' West   (decimal: -121.3098246)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Northwest Territories
• Elevation: 116 meters
• Location: Mackenzie
• Atlas of Canada Locator Map: Truesdell Island
• GPS Coordinate Locator Map: Truesdell Island Lat/Long