Lac Cocasse is a Lake located in Rivière-Mistassini; Maria-Chapdelaine, Quebec.

• Latitude: 49° 35' 45'' North   (decimal: 49.5958936)
• Longitude: 72° 14' 8'' West   (decimal: -72.2356287)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Mistassini; Maria-Chapdelaine
• Atlas of Canada Locator Map: Lac Cocasse
• GPS Coordinate Locator Map: Lac Cocasse Lat/Long