The 18th Avenue station is a local station on the BMT Sea Beach Line of the New York City Subway, located at the intersection of 18th Avenue and 64th Street in Mapleton, Brooklyn. It is served by the N train at all times. During rush hours, several W trains also serve this station.

The BMT Sea Beach Line is a rapid transit line of the BMT division of the New York City Subway, connecting the BMT Fourth Avenue Line at 59th Street via a four-track wide open cut to Coney Island in Brooklyn. It has at times hosted the fastest express service between Manhattan and Coney Island, since there are no express stations along the entire stretch, but now carries only local trains on the N service, which serves the entire line at all times. During rush hours, several W trains serve the line north of 86th Street.