Lac Tommy is a Lake located in Alma; Lac-Saint-Jean-Est, Quebec.

• Latitude: 48° 29' 45'' North   (decimal: 48.4958793)
• Longitude: 71° 33' 23'' West   (decimal: -71.5564916)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Alma; Lac-Saint-Jean-Est
• Atlas of Canada Locator Map: Lac Tommy
• GPS Coordinate Locator Map: Lac Tommy Lat/Long