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

• Latitude: 49° 28' 4'' North   (decimal: 49.4678285)
• Longitude: 69° 1' 23'' West   (decimal: -69.0231217)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-aux-Outardes; Manicouagan
• Atlas of Canada Locator Map: Lac J.-R.
• GPS Coordinate Locator Map: Lac J.-R. Lat/Long