Lac Gadsby is a Lake located in Lac-au-Brochet; La Haute-Côte-Nord, Quebec.

• Latitude: 49° 8' 15'' North   (decimal: 49.1375)
• Longitude: 69° 45' 16'' West   (decimal: -69.7544443)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-au-Brochet; La Haute-Côte-Nord
• Atlas of Canada Locator Map: Lac Gadsby
• GPS Coordinate Locator Map: Lac Gadsby Lat/Long