Marktosis is a Unincorporated area located in Clayoquot Land District, British Columbia and has an elevation of 12 meters.

• Latitude: 49° 17' North   (decimal: 49.2832999)
• Longitude: 126° 3' West   (decimal: -126.0500000)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Community
• Canadian Province/Territory: British Columbia
• Elevation: 12 meters
• Location: Clayoquot Land District
• Atlas of Canada Locator Map: Marktosis
• GPS Coordinate Locator Map: Marktosis Lat/Long