The S35 is a regional railway line of the Zurich S-Bahn on the ZVV (Zürich transportation network), in the cantons of Zurich, Thurgau and St. Gallen.
The line runs from Winterthur, in the canton of Zurich, to Wil, in the canton of St. Gallen, via the canton of Thurgau. For most of its route, it uses the Swiss Federal Railway's WilâÂÂWinterthur line.
All services are operated by the Thurbo railway company, using their Stadler GTW trains.