Lac Buteux is a Lake located in Rivière-Koksoak; Kativik, Quebec.

• Latitude: 57° 7' 4'' North   (decimal: 57.1179137)
• Longitude: 68° 9' 25'' West   (decimal: -68.1570546)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Koksoak; Kativik
• Atlas of Canada Locator Map: Lac Buteux
• GPS Coordinate Locator Map: Lac Buteux Lat/Long