Premier lac Siamois is a Lake located in Lac-au-Brochet; La Haute-Côte-Nord, Quebec.

• Latitude: 49° 4' 46'' North   (decimal: 49.0794776)
• Longitude: 69° 48' 25'' West   (decimal: -69.8070103)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-au-Brochet; La Haute-Côte-Nord
• Atlas of Canada Locator Map: Premier lac Siamois
• GPS Coordinate Locator Map: Premier lac Siamois Lat/Long