Gardiners Point Island is an island in Block Island Sound, New York, that was the former location of the Gardiners Island Lighthouse as well as Fort Tyler. Once a peninsula of Gardiners Island – permanently detached in 1888 by a storm – it had an area at least as large as 14 acres. Today it is part of the Long Island National Wildlife Refuge Complex, reduced, however, to a relative speck consisting of the foundations of the fort. It is locally referred to as "The Ruins".

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.