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

• Latitude: 56° 17' 56'' North   (decimal: 56.2988889)
• Longitude: 67° 51' 2'' West   (decimal: -67.8505556)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Koksoak; Kativik
• Atlas of Canada Locator Map: Lac Ronsin
• GPS Coordinate Locator Map: Lac Ronsin Lat/Long