Williamson Island is a Island located in Mackenzie, Northwest Territories.

• Latitude: 64° 6' 1'' North   (decimal: 64.1002776)
• Longitude: 108° 42' 4'' West   (decimal: -108.7010037)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Northwest Territories
• Location: Mackenzie
• Atlas of Canada Locator Map: Williamson Island
• GPS Coordinate Locator Map: Williamson Island Lat/Long