Lac Cathy is a Lake located in Lac-De La Bidière; Antoine-Labelle, Quebec.

• Latitude: 47° 13' 20'' North   (decimal: 47.2222841)
• Longitude: 74° 50' 49'' West   (decimal: -74.8468299)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-De La Bidière; Antoine-Labelle
• Atlas of Canada Locator Map: Lac Cathy
• GPS Coordinate Locator Map: Lac Cathy Lat/Long