The Gleinalm Tunnel (German: Gleinalmtunnel) is a highway tunnel in Styria, Austria. It lies along the Pyhrn Autobahn and it is 8320 m long. It connects the district of Leoben with the district Graz-Umgebung. It was opened on 1978.
The tunnel was in part built as an alternative route from Graz to the Murau District and the Murtal district, shortening the trip by about 20 minutes.
A second tube has been opened on July 21, 2017
TFI – Tunnels & Formworks International contributed in the design and realization of the works