Great Barrier is a Shoal located in Bruce, Ontario.

• Latitude: 45° 22' 49'' North   (decimal: 45.3802777)
• Longitude: 81° 42' 33'' West   (decimal: -81.7091666)
• Topography Feature Category: Shoal
• Geographical Feature: Reef
• Canadian Province/Territory: Ontario
• Location: Bruce
• Atlas of Canada Locator Map: Great Barrier
• GPS Coordinate Locator Map: Great Barrier Lat/Long