F (New York City Subway service)

The F and <F> Queens Boulevard Express/Sixth Avenue Local are two rapid transit services in the B Division of the New York City Subway. Their route bullets are colored orange, since they use and are part of the IND Sixth Avenue Line in Manhattan.

The F operates at all times between 179th Street in Jamaica, Queens and Stillwell Avenue in Coney Island, Brooklyn, making all stops except for an express section on the IND Queens Boulevard Line between Forest Hills–71st Avenue and Queens Plaza. An F shuttle train runs between Lexington Avenue–63rd Street in Manhattan and 21st Street–Queensbridge in Queens during the daytime. During overnight hours as well as middays from 10:30 a.m. to 11:45 a.m. and evenings after 8 p.m., the F makes all stops in Queens as well. Two scheduled rush hour trips in the peak direction run express in Brooklyn between Jay Street–MetroTech and Church Avenue, making one stop in between at Seventh Avenue. This express service was introduced in September 2019. In Brooklyn, local service is denoted as (F) in a circle-shaped bullet while express service is denoted as <F> in a diamond-shaped bullet.

From 1968 to 1976, the F ran express along the IND Culver Line in Brooklyn. The F also ran via the 53rd Street Tunnel until moving to the 63rd Street Tunnel in 2001; as of August 2023, service between Queens and Manhattan has been rerouted to the 53rd Street Tunnel through early 2024. Since the 1990s, there have been calls to restore partial express service from Jay Street–MetroTech to Church Avenue, although this has been very controversial. The limited express <F> service between Jay Street and Church Avenue started on September 16, 2019, with two trains in the peak direction during rush hours. The F has a weekday ridership of 600,000.