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

• Latitude: 55° 29' 24'' North   (decimal: 55.49)
• Longitude: 76° 40' 57'' West   (decimal: -76.6825)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Baie-d'Hudson; Kativik
• Atlas of Canada Locator Map: Lac Namasach
• GPS Coordinate Locator Map: Lac Namasach Lat/Long