Lac Dadies is a Lake located in Lac-Nilgaut; Pontiac, Quebec.

• Latitude: 46° 7' 4'' North   (decimal: 46.1177778)
• Longitude: 76° 34' 46'' West   (decimal: -76.5794444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Nilgaut; Pontiac
• Atlas of Canada Locator Map: Lac Dadies
• GPS Coordinate Locator Map: Lac Dadies Lat/Long