Lac Marc is a Lake located in Baie-James; Jamésie, Quebec.

• Latitude: 53° 47' 35'' North   (decimal: 53.7930556)
• Longitude: 76° 16' 16'' West   (decimal: -76.2711111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Baie-James; Jamésie
• GPS Coordinate Locator Map: Lac Marc Lat/Long