Hanen Run is a long 2nd order tributary to Dunkle Run in Washington County, Pennsylvania. This is the only stream of this name in the United States.
According to the Geographic Names Information System, it has also been known historically as:
Hanen Run rises about 0.75 miles west of West Middletown, Pennsylvania, in Washington County and then flows southeast to join Dunkle Run about 1 mile northeast of Acheson.
Hanen Run drains of area, receives about 40.0 in/year of precipitation, has a wetness index of 315.21, and is about 43% forested.