Lac au Sable is a Lake located in Lac-Nilgaut; Pontiac, Quebec.

• Latitude: 46° 41' 0'' North   (decimal: 46.6833931)
• Longitude: 76° 47' 24'' West   (decimal: -76.7899802)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Nilgaut; Pontiac
• GPS Coordinate Locator Map: Lac au Sable Lat/Long