This is a list of selected Australian islands grouped by state or territory. Australia has 8,222 islands within its maritime borders.[1]

This list is incomplete; you can help by adding missing items. (October 2019)

Largest islands

The islands larger than 1,000 square kilometres (390 sq mi) are:[2][3]

New South Wales

Bird Island, 1996
Cockatoo Island, the largest island in Sydney Harbour, 2008
Lord Howe Island, 2006

Northern Territory


K'gari, 2006
Great Keppel Island, 2007
Whitehaven Beach, Whitsunday Island, 2008

South Australia

Main category: Islands of South Australia

Remarkable Rocks on Kangaroo Island, 2007
Greenly Island; a distant view taken from the sea (circa 1903) (State Library of South Australia PRG 280/1/1/120)
Chinamans Hat Island as viewed from the nearby coastline
View of Pearson Island from its south end circa 1914 (State Library of South Australia PRG-280-1-12-263)

Ocean islands

Murray River islands

For a more comprehensive list, see List of islands within the Murray River in South Australia.


Macquarie Island
Currie harbour on King Island, 2007

Main category: Islands of Tasmania

For a more comprehensive list, see List of islands of Tasmania.

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;[6] 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.


Phillip Island, 2003

River islands

Western Australia

Rottnest Island, 2003
View of the Recherche Archipelago from Dempster Head
Middle Island, Recherche Archipelago 2011

Main category: Islands of Western Australia

For a more comprehensive list, see List of islands of Western Australia.

See also: Islands of Perth, Western Australia

Over 1,000 islands have been gazetted – only the island groups and major islands are listed.

Australian territories

Jervis Bay Territory

Australian Capital Territory

External territories

Norfolk Island, 2007

See also


  1. ^ Geoscience Australia (15 May 2014). "Islands". Retrieved 9 January 2020.
  2. ^ "Area of Australia - States and Territories". Geoscience Australia. Australian Government. 15 May 2014.
  3. ^ "National Mapping - Fab Facts, Landforms, Australian Islands". Geoscience Australia. Australian Government. Archived from the original on 22 August 2008.
  4. ^ "The Inlet that Eluded Bass". Clyde Coast Links. Archived from the original on 10 April 2013. Retrieved 1 February 2009.
  5. ^ a b No longer an island - Port of Brisbane wharves construction in the mouth of the Brisbane River extended over it
  6. ^ Brothers, Nigel; Pemberton, David; Pryor, Helen; Lucieer, Vanessa (2001). Tasmania's offshore islands: seabirds and other natural features. Hobart, Tasmania: Tasmanian Museum and Art Gallery. p. 44. ISBN 978-0-7246-4816-0.
  7. ^ "National recovery plan for Albatrosses and Giant-petrels: Section 4.1.6 Australian Antarctic Territory". Australian Government, Department of the Environment, Water, Heritage and the Arts. Archived from the original on 17 August 2008. Retrieved 16 July 2008.