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

• Latitude: 55° 4' 4'' North   (decimal: 55.0678867)
• Longitude: 67° 17' 29'' West   (decimal: -67.2915153)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Koksoak; Kativik
• Atlas of Canada Locator Map: Lac Joan
• GPS Coordinate Locator Map: Lac Joan Lat/Long