Ksi Mat'in is a River located in Cassiar Land District, British Columbia.

• Latitude: 55° 5' 30'' North   (decimal: 55.0916670)
• Longitude: 129° 24' 50'' West   (decimal: -129.4138898)
• Topography Feature Category: River
• Geographical Feature: Creek
• Canadian Province/Territory: British Columbia
• Location: Cassiar Land District
• Atlas of Canada Locator Map: Ksi Mat'in
• GPS Coordinate Locator Map: Ksi Mat'in Lat/Long