Mountjoy River is a River located in Cochrane, Ontario and has an elevation of 311 meters.

• Latitude: 48° 28' 22'' North   (decimal: 48.4727777)
• Longitude: 81° 21' 00'' West   (decimal: -81.3499999)
• Topography Feature Category: River
• Geographical Feature: River
• Canadian Province/Territory: Ontario
• Elevation: 311 meters
• Location: Cochrane
• Atlas of Canada Locator Map: Mountjoy River
• GPS Coordinate Locator Map: Mountjoy River Lat/Long