Lac Donny is a Lake located in Sainte-Thérèse-de-la-Gatineau; La Vallée-de-la-Gatineau, Quebec.

• Latitude: 46° 18' 23'' North   (decimal: 46.3063889)
• Longitude: 75° 51' 11'' West   (decimal: -75.8530556)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Sainte-Thérèse-de-la-Gatineau; La Vallée-de-la-Gatineau
• GPS Coordinate Locator Map: Lac Donny Lat/Long