Pompton Junction is a former railroad station and active railroad junction in the borough of Pompton Lakes, New Jersey, United States. The station is located on the New York and Greenwood Lake Railway and the New York, Susquehanna and Western Railway, both subsidiaries of the Erie Railroad. Pompton Junction contained two side platforms at a diamond crossing, with a station depot on the Susquehanna Railroad side and a station canopy on the Greenwood Lake side. A railroad tower with the telegraph call letters "PJ" was present on the Greenwood Lake side of the station.