Throggs Neck (also known as Throgs Neck) is a narrow spit of land in the southeastern portion of the borough of the Bronx in New York City. It demarcates the passage between the East River (an estuary), and Long Island Sound. "Throggs Neck" is also the name of the neighborhood of the peninsula, bounded on the north by East Tremont Avenue and Baisley Avenue, on the west by Westchester Creek, and on the other sides by the River and the Sound.