Illnau is a railway station in the municipality of Illnau-Effretikon in the canton of Zurich, Switzerland. The station, which takes its name from the village of Illnau, is located on the Effretikon to Hinwil railway line, within fare zone 122 of the Zürcher Verkehrsverbund (ZVV).
The station is served by S-Bahn trains only. It is an intermediate stop on Zurich S-Bahn service S3, which links and Wetzikon via and Effretikon. During peak periods, it is also served by S-Bahn service S19, which operates between Koblenz and Pfäffikon. On weekends (Friday and Saturday nights), there is a nighttime S-Bahn service (SN8) offered by ZVV. Summary of all S-Bahn services:
In addition, buses of Verkehrsbetriebe Glattal (VBG) depart from the bus station adjacent to the railway station.