O'Nelly Lake is a Lake located in Newfoundland and Labrador and has an elevation of 676 meters.

• Latitude: 54° 51' 0'' North   (decimal: 54.8501079)
• Longitude: 67° 3' 57'' West   (decimal: -67.0659428)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Newfoundland and Labrador
• Elevation: 676 meters
• Atlas of Canada Locator Map: O'Nelly Lake
• GPS Coordinate Locator Map: O'Nelly Lake Lat/Long