A/S Tryvandsbanen was a Norwegian company that constructed a rail extension nicknamed Tryvandsbanen ("Tryvann Line") of the

Holmenkoll Line The Holmenkollen Line () is an Oslo Metro line which runs between Majorstuen and Nordmarka in Oslo, Norway. Operating as Metro Line 1, it is the route with the fewest passengers and the only one still to have level crossings and short station ...

from Besserud (then Holmenkollen) to Tryvandshøiden station. The company was established 4 January 1912 and opened the Tryvann Line 15 May 1916. Tryvandsbanen was disestablished on 1 January 1920.

References

1911 establishments in Norway 1920 disestablishments in Norway Norwegian companies established in 1911 Railway companies established in 1911 Railway companies disestablished in 1920 {{oslo-metro-stub