The Biessenhofen–Füssen railway is a single-track and non-electrified branch line in the German state of Bavaria and it is a branch line connecting Füssen with the village of Biessenhofen on the Buchloe–Lindau railway.

On 1 June 1889, the extension to Füssen was opened, but it was built and operated by the private Lokalbahn AG (LAG).

Until the end of 2018, the track was operated by Deutsche Bahn and also known by the name König-Ludwig-Bahn ("King Ludwig Railway").

The Munich–Füssen route (RB 68) is also served by three train pairs a day.

These are operated by Bayerische Regiobahn with Alstom Coradia LINT diesel multiple units.