Goodenough Island in the
Solomon Sea (identified as Morata on the earliest maps) is the westernmost of the three large islands of the
D'Entrecasteaux Islands in
Milne Bay Province of
Papua New Guinea. It lies to the east of mainland New Guinea and south west of the
Trobriand Islands. It should not be confused with
Goodenough's Island. It is roughly circular in shape, measuring with an area of and a shoreline of . From a coastal belt varying in width from in width, the island rises sharply to the summit of
Mount Vineuo, above sea level, making it one of the most precipitous islands in the world. The small island of
Wagifa Island lies to the south-east of the island and is included within Goodenoughs administration.