Third Portage Lake is a Lake located in Restigouche, New Brunswick and has an elevation of 365 meters.

• Latitude: 47° 30' 8'' North   (decimal: 47.5022730)
• Longitude: 66° 35' 28'' West   (decimal: -66.5910480)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: New Brunswick
• Elevation: 365 meters
• Location: Restigouche
• Atlas of Canada Locator Map: Third Portage Lake
• GPS Coordinate Locator Map: Third Portage Lake Lat/Long