Rat River Bay is a Bay located in Rainy River, Ontario and has an elevation of 345 meters.

• Latitude: 48° 35' 23'' North   (decimal: 48.5897222)
• Longitude: 92° 40' 10'' West   (decimal: -92.6694444)
• Topography Feature Category: Bay
• Geographical Feature: Bay
• Canadian Province/Territory: Ontario
• Elevation: 345 meters
• Location: Rainy River
• Atlas of Canada Locator Map: Rat River Bay
• GPS Coordinate Locator Map: Rat River Bay Lat/Long