An interchange station (British English) or transfer station (American English) is a train station for more than one railway route in a public transport system, and allows passengers to change from one route to another. Transfer may occur within the same mode, or between rail modes, or to buses. Such stations usually have more platforms than single route stations. They may be required to pay extra fare for the interchange if they leave a paid area. Some rapid transit systems, however, have a fare system which allows commuters to freely change routes in the station.
Some interchange stations offer only transfer between routes and do not have the ability for passengers to enter or exit the network, for instance Cornbrook on the Manchester Metrolink light rail system (although passenger entrances and exits for the station were established in 2005) and Prince Edward Station on Hong Kong MTR.