Big Bay is a Unincorporated area located in Grey, Ontario and has an elevation of 191 meters.

• Latitude: 44° 47' 26'' North   (decimal: 44.7905555)
• Longitude: 80° 56' 52'' West   (decimal: -80.9477777)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Compact Rural Community
• Canadian Province/Territory: Ontario
• Elevation: 191 meters
• Location: Grey
• Atlas of Canada Locator Map: Big Bay
• GPS Coordinate Locator Map: Big Bay Lat/Long