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

• Latitude: 51° 15' 7'' North   (decimal: 51.2520459)
• Longitude: 75° 58' 38'' West   (decimal: -75.9771946)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac Simiyan
• GPS Coordinate Locator Map: Lac Simiyan Lat/Long