Cassidy Shoal is a Shoal located in Frontenac, Ontario.

• Latitude: 44° 15' 40'' North   (decimal: 44.2611111)
• Longitude: 76° 21' 10'' West   (decimal: -76.3527777)
• Topography Feature Category: Shoal
• Geographical Feature: Shoal
• Canadian Province/Territory: Ontario
• Location: Frontenac
• Atlas of Canada Locator Map: Cassidy Shoal
• GPS Coordinate Locator Map: Cassidy Shoal Lat/Long