Phillipsburg Union Station is an inactive railroad station in Phillipsburg, New Jersey, United States, at 178 South Main Street. Opened in 1914, Union Station was built by the Delaware, Lackawanna & Western Railroad (DL&W) and shared with the Central Railroad of New Jersey (CNJ) and was situated where the lines merged before the bridge crossing the Delaware River. Designed by Frank J. Nies, the architect who produced many of DL&W stations now listed state and federal registers of historic places, the 2 1/2 story, 3 bay brick building is unusual example of a union station and a representation of early 20th century Prairie style architecture. The Phillipsburg Union Signal Tower, or PU Tower, is nearby.