Lac Syd is a Lake located in Lac-Nilgaut; Pontiac, Quebec and has an elevation of 289 meters.

• Latitude: 46° 2' 37'' North   (decimal: 46.0436111)
• Longitude: 76° 26' 59'' West   (decimal: -76.4497222)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 289 meters
• Location: Lac-Nilgaut; Pontiac
• Atlas of Canada Locator Map: Lac Syd
• GPS Coordinate Locator Map: Lac Syd Lat/Long