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

• Latitude: 61° 28' 30'' North   (decimal: 61.4750231)
• Longitude: 74° 34' 5'' West   (decimal: -74.5680826)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Koksoak; Kativik
• Atlas of Canada Locator Map: Lac Cécilia
• GPS Coordinate Locator Map: Lac Cécilia Lat/Long