Wien Hütteldorf (Hütteldorf-Hacking until 1981) is a railway station located in the Penzing district of Vienna, Austria. Opened in 1858, it is owned and operated by the Austrian Federal Railways (ÖBB), and is served by long distance, regional and S-Bahn trains. Housed within a train shed at the station is the Hütteldorf U-Bahn station, which is the western terminus of Line U4 of the Vienna U-Bahn.