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

Northport is known for its Victorian mature village center, still bearing trolley rails from a long before discontinued streetcar extraction which would transport village residents to the Long Island Rail Road station in East Northport. The village Main Street runs from the Village Green along the harbor-front to the former hamlet of Vernon Valley, which has since been subsumed by the next to community of East Northport. As of 2010, the village has a population of nearly 7,401 and is served by the Northport-East Northport School District.

The indigenous inhabitants of the area now known as Northport were the Matinecocks, one of 13 Native American tribes of Long Island. The Matinecocks called this land Opcathontyche, which meant “wading place creek”. After Dutch immersion a few years earlier, the estate was sold by Chief Asharoken, head of the Matinecocks, to three Englishmen in 1656.

With land that was well suited for farming, the prematurely settlers grazed cattle upon pastures on the order of the harbor. The Place soon became known as Great Cow Harbour. (The manageable hamlet of Centerport was known as Little Cow Harbour.) The oldest home still standing in Northport, the Skidmore House upon Main Street, was built in 1761. In 2009 the home was put taking place for sale, sparking the village to pass a historical preservation law.