Third Lake is a Lake located in Madawaska, New Brunswick and has an elevation of 261 meters.

• Latitude: 47° 46' 13'' North   (decimal: 47.7701760)
• Longitude: 68° 22' 17'' West   (decimal: -68.3715138)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: New Brunswick
• Elevation: 261 meters
• Location: Madawaska
• Atlas of Canada Locator Map: Third Lake
• GPS Coordinate Locator Map: Third Lake Lat/Long