Iltiosbahn is a funicular railway in the Canton of St. Gallen, Switzerland.

It leads from Unterwasser at 911 m to Iltios at 1339 m,[2] from where an aerial cableway continues to Chäserrugg (2262 m), a peak of the Churfirsten range above Lake Walen.

The line has a length of 1195 m with a maximum incline of 27% and a difference of elevation of 428 m.[2] The funicular is owned and operated by Toggenburg Bergbahnen AG.

[3] The railway was built in 1934,[4] the aerial lift 1972.

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