The New York Aquarium is the oldest continually operating aquarium in the United States, located on the Riegelmann Boardwalk in Coney Island, Brooklyn, New York City. It was founded at Castle Garden in Battery Park, Manhattan, in 1896, and moved to Coney Island in 1957. The aquarium is operated by the Wildlife Conservation Society (WCS) as part of its integrated system of four zoos and one aquarium, most notably the Bronx Zoo. It is accredited by the Association of Zoos and Aquariums (AZA). As part of WCS, the aquarium's mission is to save wildlife and wild places worldwide through science, conservation action, education, and inspiring people to value nature.

A public aquarium (pl. aquaria) or public water zoo is the aquatic counterpart of a zoo, which houses living aquatic animal and plant specimens for public viewing. Most public aquariums feature tanks larger than those kept by home aquarists, as well as smaller tanks.