Promontoire de Martigny is a Cape located in Rivière-Koksoak; Kativik, Quebec.

• Latitude: 62° 6' 55'' North   (decimal: 62.1152720)
• Longitude: 72° 40' 40'' West   (decimal: -72.6777917)
• Topography Feature Category: Cape
• Geographical Feature: Promontoire
• Canadian Province/Territory: Quebec
• Location: Rivière-Koksoak; Kativik
• GPS Coordinate Locator Map: Promontoire de Martigny Lat/Long