The Feldkirch–Buchs railway is a 18.52 km (11.51 mi) electrified single track railway line that links Austria and Switzerland passing through Liechtenstein. Owned by the Austrian Federal Railways (ÖBB), it is the only railway line in Liechtenstein.

The Vorarlberg Railway denotes a through line running through the Austrian state of Vorarlberg. Its route is similar to the Rheintal/Walgau Autobahn from the border between Lindau and Hörbranz to Bludenz, where it connects to the Arlberg Railway. The entire route in Austria is owned and is operated up to Lindau-Insel by the Austrian Federal Railways.