The Tauern Tunnel is a 6546-meter-long road tunnel on the Tauern Autobahn A 10. Together with the Katschberg Tunnel it is an important part of the route from Villach to Salzburg.
Originally the Tauerntunnel – as well as the Katschberg tunnel – was planned as a two-tube motorway tunnel. Due to costs and the less than expected traffic volume, however, only one of the two tubes with a length of 6401 m was completed in 1975. Plans for the second tube were abandoned in 1988.