Lac Paachisii is a Lake located in Baie-d'Hudson; Kativik, Quebec.

• Latitude: 56° 16' 1'' North   (decimal: 56.2669444)
• Longitude: 76° 4' 31'' West   (decimal: -76.0752778)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Baie-d'Hudson; Kativik
• Atlas of Canada Locator Map: Lac Paachisii
• GPS Coordinate Locator Map: Lac Paachisii Lat/Long