Lac Porcupine is a Lake located in Petit-Mécatina; Minganie, Quebec.

• Latitude: 51° 33' 42'' North   (decimal: 51.5617201)
• Longitude: 57° 57' 32'' West   (decimal: -57.9588037)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Petit-Mécatina; Minganie
• Atlas of Canada Locator Map: Lac Porcupine
• GPS Coordinate Locator Map: Lac Porcupine Lat/Long