Lac d'Éther is a Lake located in Lac-au-Brochet; La Haute-Côte-Nord, Quebec.

• Latitude: 49° 11' 4'' North   (decimal: 49.1844813)
• Longitude: 69° 51' 17'' West   (decimal: -69.8547964)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-au-Brochet; La Haute-Côte-Nord
• Atlas of Canada Locator Map: Lac d'Éther
• GPS Coordinate Locator Map: Lac d'Éther Lat/Long