Duncan Island is a Island located in 50-20-W, Manitoba and has an elevation of 253 meters.

• Latitude: 53° 17' 6'' North   (decimal: 53.2850000)
• Longitude: 100° 20' 32'' West   (decimal: -100.3422000)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Manitoba
• Elevation: 253 meters
• Location: 50-20-W
• Atlas of Canada Locator Map: Duncan Island
• GPS Coordinate Locator Map: Duncan Island Lat/Long