Halcyon Rock is a Shoal located in Manitoulin, Ontario and has an elevation of 179 meters.

• Latitude: 46° 3' 50'' North   (decimal: 46.0638888)
• Longitude: 81° 40' 29'' West   (decimal: -81.6747222)
• Topography Feature Category: Shoal
• Geographical Feature: Rock
• Canadian Province/Territory: Ontario
• Elevation: 179 meters
• Location: Manitoulin
• Atlas of Canada Locator Map: Halcyon Rock
• GPS Coordinate Locator Map: Halcyon Rock Lat/Long