Bath Beach is a neighborhood in the New York City Borough of Brooklyn in the United States. It is located at the southwestern edge of the borough on Gravesend Bay. The neighborhood borders Bensonhurst and New Utrecht across 86th Street; Dyker Beach Park and Golf Course across 14th Avenue; and Gravesend across Stillwell Avenue.
Streets of the neighborhood have a unique nomenclature. Four two-way thoroughfares traverse the neighborhood, running southeast/northwest, parallel to Shore Parkway: these are Cropsey Avenue, Bath Avenue, Benson Avenue, and 86th Street. Another, Harway Avenue, runs from Stillwell only as far as Twenty-Fourth Avenue. The one-way northeast/southwest cross-streets are numbered, with the word "Bay" attached (to distinguish them, for postal reasons, from other numbering systems elsewhere in the borough), from Bay 7th Street in the northwest through Bay 50th Street in the southeast. Every third "Bay" numbered street is replaced with a two-way numbered avenue, from Fourteenth Avenue in the northwest to Twenty-Eighth Avenue in the southeast (except for what would be Twenty-Second Avenue, which is called Bay Parkway). These avenues (as well as 86th Street) are part of the larger grid of avenues and streets encompassing other neighborhoods to the north and west, in the former Towns of Gravesend, New Utrecht, and Brooklyn.
Bath Beach is served by the D service of the New York City Subway system, along the BMT West End Line. Stations along the line serving the community are 18th Avenue, 20th Avenue, Bay Parkway, 25th Avenue, and Bay 50th Street.