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

• Latitude: 61° 38' 0'' North   (decimal: 61.6333600)
• Longitude: 77° 23' 59'' West   (decimal: -77.3996249)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Baie-d'Hudson; Kativik
• GPS Coordinate Locator Map: Lac Tunusugusiq Lat/Long