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

• Latitude: 58° 16' 52'' North   (decimal: 58.2810146)
• Longitude: 69° 53' 35'' West   (decimal: -69.8929413)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Koksoak; Kativik
• Atlas of Canada Locator Map: Lac Greenbush
• GPS Coordinate Locator Map: Lac Greenbush Lat/Long