Lac Zéphir is a Lake located in Lac-Oscar; Antoine-Labelle, Quebec.

• Latitude: 46° 59' 38'' North   (decimal: 46.9939471)
• Longitude: 74° 59' 21'' West   (decimal: -74.9890648)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Oscar; Antoine-Labelle
• Atlas of Canada Locator Map: Lac Zéphir
• GPS Coordinate Locator Map: Lac Zéphir Lat/Long