The Gråkallen Line (Norwegian: Gråkallbanen) is an 8.8-kilometre suburban tram line located in Trondheim, Norway.
As the only remaining part of the Trondheim Tramway, it runs from the city center at St. Olav's Gate, via the suburban area Byåsen to Lian.
It is designated Line 1, and is served by nine Class 8 articulated trams.
After the closure of the Arkhangelsk tram in 2004, it became the world's northernmost tramway system