Martineau Lake is a Lake located in Renfrew, Ontario and has an elevation of 398 meters.

• Latitude: 45° 39' 21'' North   (decimal: 45.6558333)
• Longitude: 77° 46' 29'' West   (decimal: -77.7747222)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 398 meters
• Location: Renfrew
• Atlas of Canada Locator Map: Martineau Lake
• GPS Coordinate Locator Map: Martineau Lake Lat/Long