Zurich HB SZU railway station () is a subsurface railway station situated below Bahnhofplatz in the city centre of Zurich, Switzerland. The station is physically connected to , Zurich Main Station, via the underground ShopVille mall. It is the terminus of the standard gauge Sihltal and Uetliberg railway lines of the Sihltal Zürich Uetliberg Bahn (SZU).
The cul-de-sac station has a single Island platform. Its two tracks (), numbered 21 and 22, respectively, are not connected to any of the tracks of Zürich Hauptbahnhof, owned by Swiss Federal Railways (SBB CFF FFS).
the following S-Bahn services stop at Zürich HB SZU:
The station lies below Bahnhofplatz, which is served by trams and trolleybuses of the Verkehrsbetriebe Zürich (VBZ). Through, the undergrgound shopping mall ShopVille, the station is also connected to other stations adjacent to or nearby Zürich Hauptbahnhof (HB), namely:
The other nearby tram/bus stops Löwenplatz, Sihlpost/HB, Sihlquai/HB and Central can be reached via the streets.
The station opened on 5 May 1990, following the completion of a new tunnel under the Sihl from the old terminus at (until then a surface station), for which an already built stretch of tunnel of the unrealized Zurich Underground Railway was repurposed.