G (New York City Subway service)

The G Brooklyn-Queens Crosstown is an 11.4-mile-long (18.3 km) rapid transit service in the B Division of the New York City Subway. Its route emblem, or "bullet", is colored light green since it uses the IND Crosstown Line.

The G operates 24 hours daily between Court Square in Long Island City, Queens, and Church Avenue in Kensington, Brooklyn and makes all stops along the full route. It is the only non-shuttle service in the system that does not serve the borough of Manhattan. The G serves two stations in Queens—Court Square and 21st Street, both in Long Island City. Prior to 2010, it served the IND Queens Boulevard Line between Court Square and 71st Avenue in Forest Hills. In 1939 and 1940, the then-designated GG also used the now-demolished IND World's Fair Line to access the 1939 New York World's Fair. The GG, which became the G in 1985, had its southern terminal at Smith–Ninth Streets from 1976 to 2009.

In the 21st century, the G suffered from a wide range of issues that has resulted in complaints by people living along the route. These issues included a dearth of transfers to other services; the lack of direct service to Manhattan; short train lengths; and low frequencies. Since the 2000s, several improvements have been made to the G, including a route extension in Brooklyn and a full-route audit in 2013 that identified solutions for issues on the G service. As of 2023, additional improvements are planned for the G route, including the automation of the entire route.