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

• Latitude: 52° 26' 3'' North   (decimal: 52.4341667)
• Longitude: 77° 45' 34'' West   (decimal: -77.7594444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac Ismeniwiyu
• GPS Coordinate Locator Map: Lac Ismeniwiyu Lat/Long