Lac-Garnier is a Unincorporated area located in L'Ascension-de-Notre-Seigneur; Lac-Saint-Jean-Est, Quebec.

• Latitude: 48° 43' 33'' North   (decimal: 48.7258333)
• Longitude: 71° 42' 56'' West   (decimal: -71.7155556)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Centre de villégiature
• Canadian Province/Territory: Quebec
• Location: L'Ascension-de-Notre-Seigneur; Lac-Saint-Jean-Est
• Atlas of Canada Locator Map: Lac-Garnier
• GPS Coordinate Locator Map: Lac-Garnier Lat/Long