Lac Katnokomat is a Lake located in Rivière-Saint-Jean; Minganie, Quebec.

• Latitude: 50° 28' 58'' North   (decimal: 50.4827778)
• Longitude: 64° 11' 40'' West   (decimal: -64.1944444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Saint-Jean; Minganie
• GPS Coordinate Locator Map: Lac Katnokomat Lat/Long