Lac Atchynia is a Lake located in Baie-James; Jamésie, Quebec and has an elevation of 545 meters.

• Latitude: 54° 11' 21'' North   (decimal: 54.1891667)
• Longitude: 71° 23' 28'' West   (decimal: -71.3911111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 545 meters
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac Atchynia
• GPS Coordinate Locator Map: Lac Atchynia Lat/Long