Flatlands Avenue is a major street in the New York City borough of Brooklyn. It runs approximately 5 miles (8.0 km) east-west, from Avenue N and East 35th Street in Flatlands in the west to Forbell Street, east of Fountain Avenue in East New York, near the Brooklyn-Queens border. The right-of-way continues in Lindenwood and Howard Beach, Queens as 156th Avenue, separated by the remnants of Spring Creek. The portion of Flatlands Avenue east of Louisiana Avenue in East New York was previously mapped as Fairfield Avenue.

Fountain Avenue is a north–south running street in Brooklyn, New York. Traffic on the avenue is bidirectional for most of its length.