Gossau SG railway station (German: Bahnhof Gossau SG) is a railway station in Gossau, in the Swiss canton of St. Gallen. It is an intermediate station on the St. Gallen–Winterthur line and the terminus of the Sulgen–Gossau and 1,000 mm (3 ft 3+3⁄8 in) metre gauge Gossau–Wasserauen lines.

The station has one island platform and one side platform on the St. Gallen–Winterthur line, with tracks (Gleis) numbered 1, 3 and 4. These tracks are used by InterCity (IC), InterRegio (IR) and S-Bahn services S1 and S5.

The S23 service departs from the adjacent Appenzell Railways (AB) station, where two platforms and tracks (Gleis 11/12) exist.

PostAuto Schweiz and RegioBus [de] bus lines depart from the bus station in front of the station building (Bahnhofplatz).

As of the December 2023 timetable change, the following services stop at Gossau SG:

• / : half-hourly service between Zürich HB and St. Gallen and hourly service to Geneva Airport and Chur.

• St. Gallen S-Bahn:
  • S1: half-hourly service over the St. Gallen–Winterthur line between Wil SG and Schaffhausen via St. Gallen and Romanshorn, supplementing the long-distance services.
  • S5: half-hourly (weekdays) or hourly (weekends) service between Weinfelden and St. Gallen; hourly service to St. Margrethen.
  • S23: half-hourly service over the Gossau–Wasserauen line to Wasserauen, via Herisau and Appenzell.

• Media related to Gossau SG railway station at Wikimedia Commons
• Gossau SG railway station – SBB