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

• Latitude: 50° 10' 5'' North   (decimal: 50.1680835)
• Longitude: 68° 16' 22'' West   (decimal: -68.2728536)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-aux-Outardes; Manicouagan
• Atlas of Canada Locator Map: Lac Guillemette
• GPS Coordinate Locator Map: Lac Guillemette Lat/Long