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

• Latitude: 55° 1' 43'' North   (decimal: 55.0286111)
• Longitude: 63° 35' 10'' West   (decimal: -63.5861111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Koksoak; Kativik
• Atlas of Canada Locator Map: Lac Zalterius
• GPS Coordinate Locator Map: Lac Zalterius Lat/Long