Mainguy Island is a Island located in Cowichan Land District, British Columbia and has an elevation of 8 meters.

• Latitude: 48° 54' North   (decimal: 48.8999999)
• Longitude: 123° 41' West   (decimal: -123.6833000)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: British Columbia
• Elevation: 8 meters
• Location: Cowichan Land District
• Atlas of Canada Locator Map: Mainguy Island
• GPS Coordinate Locator Map: Mainguy Island Lat/Long