Lac Mamaittulik is a Lake located in Baie-d'Hudson; Kativik, Quebec.

• Latitude: 58° 51' 46'' North   (decimal: 58.8627778)
• Longitude: 77° 27' 31'' West   (decimal: -77.4586111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Baie-d'Hudson; Kativik
• Atlas of Canada Locator Map: Lac Mamaittulik
• GPS Coordinate Locator Map: Lac Mamaittulik Lat/Long