Prospect Lefferts Gardens is a residential neighborhood in the Flatbush area of the New York City borough of Brooklyn. The community is bounded by Empire Boulevard to the north, Clarkson Avenue to the south, New York Avenue to the east, and Ocean Avenue/Prospect Park to the west. Prospect Lefferts Gardens was designated a New York City Landmark area in 1979 and called the Prospect Lefferts Gardens Historic District.