The Mælefjell Tunnel (Norwegian: Mælefjelltunnelen) is a 9.35-kilometre-long (5.81 mi) road tunnel along the European route E134 highway in Telemark county, Norway.

The southern end of the tunnel is located at Århus on the north side of the village of Seljord in Seljord Municipality.

It is part of the European route E134 highway, and upon its completion, it made the highway about 10 kilometres (6.2 mi) shorter, saving trucks about 18 minutes of driving time between those two places.

[1] The tunnel was built to shorten the travel time along the European route E134 highway and provide better accessibility especially for heavy vehicles by avoiding the Åsebrekken pass, as well as increasing traffic safety along a congested section of road.

The 9,355-metre (30,692 ft) long tunnel passes beneath the mountain Mælefjell.