Lac Duncker is a Lake located in Senneterre; Vallée-de-l'Or, Quebec.

• Latitude: 47° 51' 28'' North   (decimal: 47.8578601)
• Longitude: 76° 29' 29'' West   (decimal: -76.4913405)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Senneterre; Vallée-de-l'Or
• Atlas of Canada Locator Map: Lac Duncker
• GPS Coordinate Locator Map: Lac Duncker Lat/Long