Lac Ossant is a Lake located in Rivière-Koksoak; Kativik, Quebec.

• Latitude: 55° 3' 14'' North   (decimal: 55.0538889)
• Longitude: 72° 20' 32'' West   (decimal: -72.3422222)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Koksoak; Kativik
• Atlas of Canada Locator Map: Lac Ossant
• GPS Coordinate Locator Map: Lac Ossant Lat/Long