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

• Latitude: 49° 42' 9'' North   (decimal: 49.7025)
• Longitude: 67° 52' 19'' West   (decimal: -67.8719444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-aux-Outardes; Manicouagan
• GPS Coordinate Locator Map: Lac Long Lat/Long