Anse Istwanis is a Bay located in Baie-James; Jamésie, Quebec and has an elevation of 207 meters.

• Latitude: 52° 58' 11'' North   (decimal: 52.9697222)
• Longitude: 76° 52' 14'' West   (decimal: -76.8705556)
• Topography Feature Category: Bay
• Geographical Feature: Anse
• Canadian Province/Territory: Quebec
• Elevation: 207 meters
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Anse Istwanis
• GPS Coordinate Locator Map: Anse Istwanis Lat/Long