Lac Tiffis is a Lake located in Bonne-Espérance; Basse-Côte-Nord, Quebec.

• Latitude: 51° 33' 43'' North   (decimal: 51.5619976)
• Longitude: 57° 54' 46'' West   (decimal: -57.9126920)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Bonne-Espérance; Basse-Côte-Nord
• Atlas of Canada Locator Map: Lac Tiffis
• GPS Coordinate Locator Map: Lac Tiffis Lat/Long