The Helsinki Metro (Finnish: Helsingin metro, Swedish: Helsingfors metro), is the metro system in Helsinki, Finland. It is the World's most northern metro system, and currently the only one in Finland. The system was opened to the general public on 2 August 1982 after 27 years of planning. It is operated by Helsinki City Transport (HKL) for Helsinki Regional Transport Authority (HSL) and carries 50 million passengers per year.
The system contains a single forked line with seventeen stations along a total length of 21.1 kilometres (13.1 mi). It primarily serves the tightly built suburbs of East Helsinki, but can also be used as a means of transport within the central parts of the city. The Länsimetro extension will continue the line into western Helsinki and the southern parts of the neighbouring city of Espoo, currently served by buses only.
The local commuter rail network (overground) that serves north and northwest directions does not intersect with the metro network, but passengers can change trains at the Helsinki Central Railway Station (Metro station Rautatientori).