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

• Latitude: 55° 20' 18'' North   (decimal: 55.3383333)
• Longitude: 70° 40' 54'' West   (decimal: -70.6816667)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Koksoak; Kativik
• Atlas of Canada Locator Map: Lac Poncy
• GPS Coordinate Locator Map: Lac Poncy Lat/Long