Tasmania is a large island state off the south-east coast of mainland Australia. The main island of Tasmania (which includes 94% of the state's land area) does not have a defined name but can be referred to as the "Tasmanian mainland". There are 334 islands (or islets) within the state of Tasmania; with the main islands listed below, each having a land area greater than 100 hectares (250 acres). A full list of all 334 islands is located at the list of islands of Tasmania.
^no longer an island - Port of Brisbane wharves construction in the mouth of the Brisbane River extended over it
^Brothers, Nigel; Pemberton, David; Pryor, Helen; Lucieer, Vanessa (2001). Tasmania's offshore islands: seabirds and other natural features. Tasmania's Offshore Islands by Region. Hobart, Tasmania: Tasmanian Museum and Art Gallery. p. 44. ISBN978-0-7246-4816-0.