Lac Demi-Mille is a Lake located in Rivière-Mouchalagane; Caniapiscau, Quebec.

• Latitude: 52° 27' 8'' North   (decimal: 52.4522222)
• Longitude: 67° 18' 42'' West   (decimal: -67.3116667)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Mouchalagane; Caniapiscau
• Atlas of Canada Locator Map: Lac Demi-Mille
• GPS Coordinate Locator Map: Lac Demi-Mille Lat/Long