Lac Rideau is a Lake located in Havre-Saint-Pierre; Minganie, Quebec.

• Latitude: 50° 32' 20'' North   (decimal: 50.5388889)
• Longitude: 63° 35' 43'' West   (decimal: -63.5952778)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Havre-Saint-Pierre; Minganie
• Atlas of Canada Locator Map: Lac Rideau
• GPS Coordinate Locator Map: Lac Rideau Lat/Long