The Ländches Railway (Ländchesbahn) is a single-track non-electrified branch railway line between Wiesbaden and Niedernhausen, in the German state of Hesse. The 19.6-kilometre (12.2 mi) long line was opened in 1879. It is now Deutsche Bahn route 627 and route 21 (RB 21) of the Rhein-Main-Verkehrsverbund.