The Long Island, part of the Long Island Group within the Furneaux Group, is a 313-hectare (770-acre) unpopulated granite and dolerite island, located in Bass Strait, lying north-west of the Cape Barren Island in Tasmania, in south-eastern Australia. The island is part of the Franklin Sound Islands Important Bird Area, identified as such by BirdLife International because it holds over 1% of the world populations of six bird species.