The South Street Seaport is a historic area in the New York City borough of Manhattan, centered where Fulton Street meets the East River, and adjacent to the Financial District. The Seaport is a designated historic district, and is distinct from the neighboring Financial District. It is part of Manhattan Community Board 1 in Lower Manhattan, and is bounded by the Financial District to the west, southwest, and north; the East River to the southeast; and Two Bridges to the northeast.

It features some of the oldest architecture in downtown Manhattan, and includes the largest concentration of restored early 19th-century commercial buildings in the city. This includes renovated original mercantile buildings, renovated sailing ships, the former Fulton Fish Market, and modern tourist malls featuring food, shopping, and nightlife.