It was opened as Throndhjem, changed in 1894 to Trondhjem, on 1 January 1930 to Nidaros and to Trondheim on 6 March 1931.
The city was initially known as Throndhjem, then became Trondhjem in 1894. It underwent a name change on January 1, 1930, becoming Nidaros, and was renamed once more to Trondheim on March 6, 1931.