Fall Leaf is an unincorporated community in Leavenworth County, Kansas, United States. It is part of the Kansas City metropolitan area.
A post office called Fall Leaf was established in 1868, and remained in operation until it was discontinued in 1894. The community was named for a Delaware chief.
38°58′27″N 95°06′38″W / 38.97417°N 95.11056°W