Sihlwald is a railway station in the Sihl Valley, and the municipality of Horgen, in the Swiss Canton of Zürich.

[1] Sihlwald was the original terminus of the Sihtal line, which was opened from Bahnhof Selnau in Zürich in 1892.

The station retains a locomotive shed dating from the time of that extension[2] that is used by the heritage railway association Zürcher Museums-Bahn.

Today, the station is the formal terminus of service S4 of the Zürich S-Bahn, although the situation within a protected forest and with few other traffic generators nearby means that most S4 trains terminate at Langnau-Gattikon, one stop nearer Zürich, leaving this station to be served by one train an hour.

The stretch of railway beyond Sihlwald to Sihlbrugg still exists, but no longer carries a regular passenger train service.