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

• Latitude: 54° 47' 7'' North   (decimal: 54.7852778)
• Longitude: 76° 49' 55'' West   (decimal: -76.8319444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac Samisin Aciiyiyut
• GPS Coordinate Locator Map: Lac Samisin Aciiyiyut Lat/Long