Mary Ward Ledges is a Shoal located in Simcoe, Ontario.

• Latitude: 44° 33' 43'' North   (decimal: 44.5619444)
• Longitude: 80° 19' 12'' West   (decimal: -80.3199999)
• Topography Feature Category: Shoal
• Geographical Feature: Ledges
• Canadian Province/Territory: Ontario
• Location: Simcoe
• Atlas of Canada Locator Map: Mary Ward Ledges
• GPS Coordinate Locator Map: Mary Ward Ledges Lat/Long