Lac à Théodore is a Lake located in Saint-Siméon; Charlevoix-Est, Quebec and has an elevation of 276 meters.

• Latitude: 47° 59' 13'' North   (decimal: 47.9869444)
• Longitude: 69° 59' 20'' West   (decimal: -69.9888889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 276 meters
• Location: Saint-Siméon; Charlevoix-Est
• Atlas of Canada Locator Map: Lac à Théodore
• GPS Coordinate Locator Map: Lac à Théodore Lat/Long