Gardiners Island

Gardiners Island
Gardiners Island in 2007
Geography
LocationGardiners Bay
Total islands2
Area5.184 sq mi (13.43 km2)
Administration
United States
StateNew York
CountySuffolk County

Gardiner's Island is a small island in the Town of East Hampton, New York, in Eastern Suffolk County. It is located in Gardiner's Bay between the two peninsulas at the east end of Long Island. It is 6 miles (9.7 km) long, 3 miles (4.8 km) wide and has 27 miles (43 km) of coastline.

The island has been owned by the Gardiner family and their descendants since 1639 when Lion Gardiner purchased it from the Montaukett chief Wyandanch. At 5.19 square miles (13.4 km2), it is one of the largest privately owned islands in the United States, though slightly smaller than Naushon Island in Massachusetts, owned by the Forbes family.