The Mangfall (German pronunciation: [ˈmaŋfal] ) is a river of Upper Bavaria, Germany. It is a left tributary of the Inn. The Mangfall is the outflow of the Tegernsee lake and discharges into the Inn in Rosenheim. The Mangfall is 63 km (39 mi) long.
The Mangfall is not navigable. However, it was once used to transport trees (drifting), which were either processed into paper or used as fuel.