Northport is a historic maritime village on the northern shore of Long Island in Suffolk County, New York, United States. Initially designated Great Cow Harbour by 17th-century English colonists, the area was officially renamed Northport in 1837. In 1894, in an effort to localize governance, the community was incorporated as a village.

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.