Lac Éthier is a Lake located in Franquelin; Manicouagan, Quebec.

• Latitude: 49° 22' 38'' North   (decimal: 49.3772685)
• Longitude: 67° 49' 21'' West   (decimal: -67.8225115)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Franquelin; Manicouagan
• Atlas of Canada Locator Map: Lac Éthier
• GPS Coordinate Locator Map: Lac Éthier Lat/Long