Lac Dédé is a Lake located in Rivière-aux-Outardes; Manicouagan, Quebec.

• Latitude: 49° 42' 39'' North   (decimal: 49.7108333)
• Longitude: 67° 51' 27'' West   (decimal: -67.8575)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-aux-Outardes; Manicouagan
• Atlas of Canada Locator Map: Lac Dédé
• GPS Coordinate Locator Map: Lac Dédé Lat/Long