Holstein is a station on the Sognsvann Line (line 5) of the Oslo Metro in Norway. The station is located between Kringsjå and Østhorn stations. Holstein was opened during the Second World War, in 1941. Formerly Nordberg was the next southbound station, but it was closed in 1992, at the same time as Holstein was re-built with longer platforms and new ticket machines. The name Holstein is believed to origin from Schleswig-Holstein in Germany.