Lac Muir is a Lake located in Lac-Nilgaut; Pontiac, Quebec and has an elevation of 417 meters.

• Latitude: 46° 37' 27'' North   (decimal: 46.6241667)
• Longitude: 76° 47' 32'' West   (decimal: -76.7922222)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 417 meters
• Location: Lac-Nilgaut; Pontiac
• Atlas of Canada Locator Map: Lac Muir
• GPS Coordinate Locator Map: Lac Muir Lat/Long