geographical region in the Pacific Ocean that is described as a continent in some parts of the world

Oceania is a name used in geography for the region made up of Australia, Polynesia, Melanesia, and several other island nations in the surrounding area. It is often listed as one of the continents of the world.

Oceania (Shown in green shaded areas)

The term "Oceania" does not have one single agreed definition. The widest definition of Oceania includes the entire region between continental Asia and the Americas, including Australasia, as well as islands in the Pacific Rim such as the Japanese archipelago, Taiwan, and the Aleutian islands.

On the other hand, the Oceania ecozone includes all of Micronesia, Fiji, and all of Polynesia except New Zealand. Sometimes, people use the term 'Oceania' to include only the Polynesian and Melanesian islands in the Pacific Ocean, as separate from Australasia. When Oceania is treated separately from Australia, the region of Oceania is referred to as "Australia and Oceania".[1]

In the United Nations' geographic regions, Oceania includes Australia and the nations of the Pacific from Papua New Guinea east, but not the Malay Archipelago or Indonesian New Guinea.[2]

A smaller usage of Oceania as a continent includes only Australia, Tasmania, New Guinea, and the islands between them. This part of the world is usually called Australasia instead. For these reasons, it is not correct to say that Australasia is part of Oceania, because what is meant by 'Oceania' is not clear. Australasia has an exact definition in biogeography and geology; Australasia includes New Zealand, Australia (including Tasmania), and Melanesia, New Guinea, and the islands just north and east of Australia. All these are south-east of the BaliLombok line, also known as the Wallace Line.

Countries in OceaniaEdit


  1. Society, National Geographic (2012-01-04). "Australia and Oceania: Physical Geography". National Geographic Society. Retrieved 2021-04-21.
  2. "UNSD — Methodology". unstats.un.org. Retrieved 2021-04-21.


  1. 1.0 1.1 In free association with New Zealand.