Petit lac Lanciault is a Lake located in Lac-Walker; Sept-Rivières, Quebec.

• Latitude: 50° 35' 50'' North   (decimal: 50.5972222)
• Longitude: 67° 11' 7'' West   (decimal: -67.1852777)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Walker; Sept-Rivières
• Atlas of Canada Locator Map: Petit lac Lanciault
• GPS Coordinate Locator Map: Petit lac Lanciault Lat/Long