Lac Antuiahkuhiu is a Lake located in Havre-Saint-Pierre; Minganie, Quebec.

• Latitude: 50° 32' 23'' North   (decimal: 50.5397222)
• Longitude: 63° 39' 23'' West   (decimal: -63.6563889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Havre-Saint-Pierre; Minganie
• GPS Coordinate Locator Map: Lac Antuiahkuhiu Lat/Long