Lac à Ross is a Lake located in Sainte-Jeanne-d'Arc; La Mitis, Quebec.

• Latitude: 48° 31' 13'' North   (decimal: 48.5203201)
• Longitude: 67° 59' 38'' West   (decimal: -67.9938999)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Sainte-Jeanne-d'Arc; La Mitis
• Atlas of Canada Locator Map: Lac à Ross
• GPS Coordinate Locator Map: Lac à Ross Lat/Long