Lac Gras is a Lake located in Lac-Marguerite; Antoine-Labelle, Quebec.

• Latitude: 46° 55' 43'' North   (decimal: 46.9286111)
• Longitude: 75° 48' 37'' West   (decimal: -75.8102778)
• Topography Feature Category: Lake
• Geographical Feature: Étang
• Canadian Province/Territory: Quebec
• Location: Lac-Marguerite; Antoine-Labelle
• Atlas of Canada Locator Map: Lac Gras
• GPS Coordinate Locator Map: Lac Gras Lat/Long