Wincoma is a hamlet in Suffolk County, New York on the westernmost headland of East Neck on the North Shore of Long Island. The hamlet survives within the Village of Huntington Bay in the Town of Huntington. Wincoma was an estate-heavy enclave and many maps denote it to this day because of its importance in literature and media of the Gilded Age. Today there are still local remnants of the hamlet including a road, Wincoma Drive.
Wincoma is located at 40°54′10″N 73°25′33″W / 40.90278°N 73.42583°W (40.903, -73.426).