Coordinates: 40°45′10″N 73°58′9″W / 40.75278°N 73.96917°W
Turtle Bay is a neighborhood in New York City, on the east side of Midtown Manhattan. It extends from either 41st or 43rd Streets to 53rd Street, and eastward from Lexington Avenue to the East River's western branch, facing Roosevelt Island.
The neighborhood is the site of the headquarters of the United Nations and the Chrysler Building. The Tudor City apartment complex is also considered to be within Turtle Bay.
Turtle Bay, a cove of the East River, received its name in the 17th century by its resemblance in shape to that of a knife, "deutal" being Dutch for "knife". The cove, which was filled in after the Civil War, was a valuable shelter from the often harsh weather on the river, and became a thriving site for shipbuilding.
The Turtle Bay neighborhood was originally a 40-acre (16 ha) land grant given to two Englishmen by the Dutch colonial governor of New Amsterdam in 1639, and named "Turtle Bay Farm". The farm extended roughly from what is now 43rd Street to 48th Street, and from Third Avenue to the river.