Three Island Lake is a Lake located in Rainy River, Ontario and has an elevation of 395 meters.

• Latitude: 49° 5' 27'' North   (decimal: 49.0908333)
• Longitude: 93° 11' 53'' West   (decimal: -93.1980555)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 395 meters
• Location: Rainy River
• Atlas of Canada Locator Map: Three Island Lake
• GPS Coordinate Locator Map: Three Island Lake Lat/Long