Lac Greig is a Lake located in Nouveau-Québec (territoire); Nord-du-Québec, Quebec.

• Latitude: 54° 9' 10'' North   (decimal: 54.1527778)
• Longitude: 66° 0' 2'' West   (decimal: -66.0005556)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Nouveau-Québec (territoire); Nord-du-Québec
• Atlas of Canada Locator Map: Lac Greig
• GPS Coordinate Locator Map: Lac Greig Lat/Long