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

• Latitude: 56° 24' 43'' North   (decimal: 56.4119444)
• Longitude: 66° 9' 58'' West   (decimal: -66.1661111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Koksoak; Kativik
• Atlas of Canada Locator Map: Lac Serre
• GPS Coordinate Locator Map: Lac Serre Lat/Long