Lac Tilly is a Lake located in Baie-James; Jamésie, Quebec and has an elevation of 354 meters.

• Latitude: 53° 57' 28'' North   (decimal: 53.9577778)
• Longitude: 73° 57' 29'' West   (decimal: -73.9580556)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 354 meters
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac Tilly
• GPS Coordinate Locator Map: Lac Tilly Lat/Long