Frank J. Nies was an American architect. He is best known for having designed numerous Delaware, Lackawanna & Western Railroad stations, at least fifteen of which have been listed on the U.S. National Register of Historic Places (with attribution below as given in NRHP): He sometimes worked with the railroad's chief engineer, Lincoln Bush. Before working for the Delaware, Lackawanna & Western, Nies was a partner in the architectural firm Finkler & Nies, with Adolph Finkler, in Chicago in 1896.
Ampere Station
Bloomfield Station
Brick Church Station
Morristown Station
Boonton Station
Dover Station
Delaware Water Gap Station
East Orange Station
Madison Station
Phillipsburg Union Station