Lac Achiusimichanuch is a Lake located in Baie-James; Jamésie, Quebec.

• Latitude: 54° 47' 17'' North   (decimal: 54.7880556)
• Longitude: 73° 55' 39'' West   (decimal: -73.9275)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac Achiusimichanuch
• GPS Coordinate Locator Map: Lac Achiusimichanuch Lat/Long