Big Bay is a Bay located in Grey, Ontario and has an elevation of 177 meters.

• Latitude: 44° 47' 47'' North   (decimal: 44.7963888)
• Longitude: 80° 56' 39'' West   (decimal: -80.9441666)
• Topography Feature Category: Bay
• Geographical Feature: Bay
• Canadian Province/Territory: Ontario
• Elevation: 177 meters
• Location: Grey
• Atlas of Canada Locator Map: Big Bay
• GPS Coordinate Locator Map: Big Bay Lat/Long