Greenport is a village in New York's Suffolk County, on the North Fork of Long Island. It is located within the Town of Southold and is the only incorporated community in the town. The population was 2,197 at the 2010 census.

Suffolk County is the easternmost county in the U.S. state of New York. It is bordered to its west by Nassau County, to its east by Gardiners Bay and the Atlantic Ocean, to its north by Long Island Sound, and to its south by Great South Bay. The county is part of the Long Island region of the state, of which it comprises the eastern two-thirds.