Lac Jacynthe is a Lake located in Lac-Bazinet; Antoine-Labelle, Quebec.

• Latitude: 47° 33' 18'' North   (decimal: 47.5550665)
• Longitude: 74° 50' 8'' West   (decimal: -74.8354330)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Bazinet; Antoine-Labelle
• Atlas of Canada Locator Map: Lac Jacynthe
• GPS Coordinate Locator Map: Lac Jacynthe Lat/Long