Fort Corchaug Archeological Site is a prehistoric archaeological site in Cutchogue on eastern Long Island in New York State. It is located west of the North Fork Country Club, on the south side of Main Road (New York State Route 25). The site shows evidence of 17th century contact between Native Americans and Europeans. Fort Corchaug itself was a log fort built by Native Americans. It may have been to protect the Corchaug tribe from other Indians, built with the help of Europeans. Ralph Solecki, a prominent American archaeologist, grew up nearby and conducted several digs on site.