Riverdale is a well-to-do residential neighborhood in the northwest Bronx in New York City. It is bordered on the west by the Hudson River. Wave Hill, a combination garden and outdoor art gallery, is in Riverdale. A weekly newspaper, The Riverdale Press, focuses on news of interest to residents of the neighborhood.

Some residents of Riverdale are reluctant to be associated with the Bronx, and use "Riverdale, New York" as an address.