This is a list of selected Australian islands grouped by state or territory. Australia has 8,222 islands within its maritime borders. [1]
![]() |
The islands larger than 1,000 square kilometres (390 sq mi) are: [2] [3]
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.
Over 1,000 islands have been gazetted – only the island groups and major islands are listed.
Protected areas of Tasmania consist of protected areas located within Tasmania and its immediate onshore waters, including Macquarie Island. It includes areas of crown land managed by Tasmanian Government agencies as well as private reserves. As of 2016, 52% of Tasmania's land area has some form of reservation classification, the majority is managed by the Tasmania Parks & Wildlife Service. Marine protected areas cover about 7.9% of state waters.
An islet is a very small, often unnamed island. Most definitions are not precise, but some suggest that an islet has little or no vegetation and cannot support human habitation. It may be made of rock, sand and/or hard coral; may be permanent or tidal ; and may exist in the sea, lakes, rivers or any other sizeable bodies of water.
Jervis Bay is a 102-square-kilometre (39 sq mi) oceanic bay and village in the Jervis Bay Territory and on the South Coast of New South Wales, Australia. In the Dhurga language of the Aboriginal inhabitants of the area, it is called Booderee, which translates as "bay of plenty".
Long Island is a densely populated island in the southeastern geographical area of the State of New York.
Broken Bay, a semi-mature tide-dominated drowned valley estuary, is a large inlet of the Tasman Sea located about 50 kilometres (31 mi) north of Sydney on the Central Coast of New South Wales, Australia; being one of the bodies of water that separate greater Metropolitan Sydney from the Central Coast. Broken Bay is the first major bay north of Sydney Harbour in the state capital of Sydney.
The Hawkesbury River, or Hawkesbury-Nepean River a river located northwest of Sydney, New South Wales, Australia. The Hawkesbury River and its associated main tributary, the Nepean River, almost encircle the metropolitan region of Sydney. Between Wisemans Ferry and the Pacific Ocean marks the boundary of Greater Metropolitan Sydney in the south and the Central Coast region to the north.
Port Stephens, an open youthful tide-dominated drowned-valley estuary, is a large natural harbour of approximately 134 square kilometres (52 sq mi) located in the Hunter and Mid North Coast regions of New South Wales, Australia.
The Shoalhaven River is a perennial river that rises from the Southern Tablelands and flows into an open mature wave dominated barrier estuary near Nowra on the South Coast of New South Wales, Australia.
Green Island or Greene Island can refer to:
The Sydney Basin is an interim Australian bioregion and is both a structural entity and a depositional area, now preserved on the east coast of New South Wales, Australia and with some of its eastern side now subsided beneath the Tasman Sea. The basin is named for the city of Sydney, on which it is centred.
Kadavu, with an area of 411 square kilometres (159 sq mi), is the fourth largest island in Fiji, and the largest island in the Kadavu Group, a volcanic archipelago consisting of Kadavu, Ono, Galoa and a number of smaller islands in the Great Astrolabe Reef. Its main administrative centre is Vunisea, which has an airport, a high school, a hospital, and a government station, on the Namalata Isthmus where the island is almost cut in two. Suva, Fiji's capital, lies 88 kilometres to the north of Kadavu. The population of the island province was 10,167 at the most recent census in 2007.
Maria Island or wukaluwikiwayna in palawa kani is a mountainous island located in the Tasman Sea, off the east coast of Tasmania, Australia. The 115.5-square-kilometre (44.6 sq mi) island is contained within the Maria Island National Park, which includes a marine area of 18.78 square kilometres (7.25 sq mi) off the island's northwest coast. The island is about 20 kilometres (12 mi) in length from north to south and, at its widest, is about 13 kilometres (8.1 mi) west to east. At its closest point, Point Lesueur, the island lies approximately 4 kilometres (2.5 mi) off the east coast of Tasmania.
Pittwater is a semi-mature tide dominated drowned valley estuary, located about 40 kilometres (25 mi) north of the Sydney central business district, New South Wales, Australia; being one of the bodies of water that separate greater Metropolitan Sydney from the Central Coast.
The Clarke Island, also known by its Indigenous name of lungtalanana, part of the Furneaux Group, is an 82-square-kilometre (32 sq mi) island in Bass Strait, south of Cape Barren Island, about 24 kilometres (15 mi) off the northeast coast of Tasmania, Australia. Banks Strait separates the island from Cape Portland on the mainland. Clarke Island is the third-largest island in the Furneaux Group, and Tasmania's eighth largest island.
The Ringgold Isles are an archipelago in Fiji, forming an outlier group to Vanua Levu. The Budd, Nukusemanu, and Heemskercq Reefs form part of the group. The group is mostly uninhabited, but Qelelevu has a small village. In 2008 Pacific rats were eradicated from seven islands of the group in an endeavour facilitated by BirdLife International's Fiji Programme.
The geography of Sydney is characterised by its coastal location on a basin bordered by the Pacific Ocean to the east, the Blue Mountains to the west, the Hawkesbury River to the north and the Woronora Plateau to the south. Sydney lies on a submergent coastline on the east coast of New South Wales, where the ocean level has risen to flood deep river valleys (rias) carved in the Sydney sandstone. Port Jackson, better known as Sydney Harbour, is one such ria.
The Archipelago of the Recherche, known locally as the Bay of Isles, is a group of 105 islands, and over 1200 "obstacles to shipping", off the south coast of Western Australia. The islands stretch 230 km (140 mi) from east to west and to 50 km (31 mi) off-shore encompassing an area of approximately 4,000 square kilometres (1,544 sq mi). The western group is near Esperance and the eastern group at Israelite Bay. They are located in coastal waters, part of which is designated the Recherche Archipelago Nature Reserve.
Cato Reef, a part of Cato Bank, is a coral reef in the Coral Sea, off the central coast of Queensland, Australia.
Captain Cook Cruises is an Australian cruise operator. As of January 2018, the company operated 21 vessels on Sydney Harbour, providing a range of Government contracted and non-contracted Ferry services, Sightseeing, Dining and Charter Cruises.