Tunnel Bay is a Bay located in Rainy River, Ontario and has an elevation of 351 meters.

• Latitude: 48° 42' 24'' North   (decimal: 48.7066666)
• Longitude: 92° 58' 46'' West   (decimal: -92.9794444)
• Topography Feature Category: Bay
• Geographical Feature: Bay
• Canadian Province/Territory: Ontario
• Elevation: 351 meters
• Location: Rainy River
• Atlas of Canada Locator Map: Tunnel Bay
• GPS Coordinate Locator Map: Tunnel Bay Lat/Long