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

• Latitude: 57° 53' 59'' North   (decimal: 57.8995943)
• Longitude: 65° 43' 39'' West   (decimal: -65.7274845)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Koksoak; Kativik
• Atlas of Canada Locator Map: Lac Oudain
• GPS Coordinate Locator Map: Lac Oudain Lat/Long