Castle Bay is a Bay located in Thunder Bay, Ontario and has an elevation of 271 meters.

• Latitude: 50° 7' 8'' North   (decimal: 50.1188888)
• Longitude: 88° 50' 11'' West   (decimal: -88.8363888)
• Topography Feature Category: Bay
• Geographical Feature: Bay
• Canadian Province/Territory: Ontario
• Elevation: 271 meters
• Location: Thunder Bay
• Atlas of Canada Locator Map: Castle Bay
• GPS Coordinate Locator Map: Castle Bay Lat/Long