The Gråkallen Line () is an  suburban tram line located in Trondheim, Norway. As the only remaining part of the Trondheim Tramway, it runs from the city centre at St. Olav's Gate, via the suburban area Byåsen to Lian.
The Gråkallen Line () is a suburban tramway in Trondheim, Norway. It originates from the city centre near St. Olav's Gate and extends via the suburban area of Byåsen to Lian, being the sole remaining part of the Trondheim Tramway.