Lac Cyriac is a Lake located in Lac-Ministuk; Le Fjord-du-Saguenay, Quebec and has an elevation of 647 meters.

• Latitude: 48° 6' 51'' North   (decimal: 48.1141667)
• Longitude: 71° 16' 56'' West   (decimal: -71.2822222)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 647 meters
• Location: Lac-Ministuk; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Lac Cyriac
• GPS Coordinate Locator Map: Lac Cyriac Lat/Long