WThis is a list of sovereign states and dependent territories in the geopolitical region of Oceania. Although it is mostly ocean and spans many continental plates, Oceania is occasionally listed as one of the continents.
WAustralia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. It is the largest country in Oceania and the world's sixth-largest country by total area. The population of 26 million is highly urbanised and heavily concentrated on the eastern seaboard. Australia's capital is Canberra, and its largest city is Sydney. The country's other major metropolitan areas are Melbourne, Brisbane, Perth, and Adelaide.
WThe Cook Islands is a self-governing island country in the South Pacific Ocean in free association with New Zealand. It comprises 15 islands whose total land area is 240 square kilometres (93 sq mi). The Cook Islands' Exclusive Economic Zone (EEZ) covers 1,960,027 square kilometres (756,771 sq mi) of ocean.
WFiji, officially the Republic of Fiji, is an island country in Melanesia, part of Oceania in the South Pacific Ocean about 1,100 nautical miles northeast of New Zealand. Fiji consists of an archipelago of more than 330 islands—of which about 110 are permanently inhabited—and more than 500 islets, amounting to a total land area of about 18,300 square kilometres (7,100 sq mi). The most outlying island is Ono-i-Lau. 87% of the total population of 883,483 live on the two major islands, Viti Levu and Vanua Levu. About three-quarters of Fijians live on Viti Levu's coasts, either in the capital city of Suva or in smaller urban centres such as Nadi—where tourism is the major local industry—or Lautoka, where the sugar-cane industry is paramount. Because of its terrain, the interior of Viti Levu is sparsely inhabited.
WKiribati, officially the Republic of Kiribati, is an independent country in the central Pacific Ocean. The permanent population is just over 110,000 (2015), more than half of whom live on Tarawa atoll. The state comprises 32 atolls and one raised coral island, Banaba. They have a total land area of 811 square kilometres and are dispersed over 3.5 million km2 (1.4 million sq mi).
WThe Marshall Islands, officially the Republic of the Marshall Islands, is an island country and an associated state of the United States near the Equator in the Pacific Ocean, slightly west of the International Date Line. Geographically, the country is part of the larger island group of Micronesia. The country's population of 58,413 people is spread out over 29 coral atolls, comprising 1,156 individual islands and islets. The capital and largest city is Majuro. It has the largest portion of its territory made of water of any sovereign state, at 97.87%.
WThe Federated States of Micronesia is an island country in Oceania associated with the United States. It consists of four states – from west to east, Yap, Chuuk, Pohnpei and Kosrae – that are spread across the western Pacific Ocean. Together, the states comprise around 607 islands that cover a longitudinal distance of almost 2,700 km (1,678 mi) just north of the equator. They lie northeast of New Guinea, south of Guam and the Marianas, west of Nauru and the Marshall Islands, east of Palau and the Philippines, about 2,900 km (1,802 mi) north of eastern Australia, 3,400 km southeast of Japan, and some 4,000 km (2,485 mi) southwest of the main islands of Hawaii.
WNauru, officially the Republic of Nauru and formerly known as Pleasant Island, is an island country and microstate in Oceania, in the Central Pacific. Its nearest neighbour is Banaba Island in Kiribati, 300 km (190 mi) to the east. It further lies northwest of Tuvalu, 1,300 km (810 mi) northeast of the Solomon Islands, east-northeast of Papua New Guinea, southeast of the Federated States of Micronesia and south of the Marshall Islands. With only a 21 km2 (8.1 sq mi) area, Nauru is the third-smallest country in the world behind Vatican City, and Monaco, making it the smallest republic. Additionally, its population of 10,670 is the world's second smallest, after Vatican City.
WNew Zealand is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island and the South Island —and around 600 smaller islands, covering a total area of 268,021 square kilometres (103,500 sq mi). New Zealand is about 2,000 kilometres (1,200 mi) east of Australia across the Tasman Sea and 1,000 kilometres (600 mi) south of the islands of New Caledonia, Fiji, and Tonga. The country's varied topography and sharp mountain peaks, including the Southern Alps, owe much to tectonic uplift and volcanic eruptions. New Zealand's capital city is Wellington, and its most populous city is Auckland.
WNiue is an island country in the South Pacific Ocean, 2,400 kilometres (1,500 mi) northeast of New Zealand. Niue's land area is about 261 square kilometres (101 sq mi) and its population, predominantly Polynesian, was about 1,600 in 2016. Niue is located in a triangle between Tonga, Samoa, and the Cook Islands. It is 604 kilometers northeast of Tonga. The island is commonly referred to as "The Rock", which comes from the traditional name "Rock of Polynesia". Niue is one of the world's largest coral islands. The terrain of the island has two noticeable levels. The higher level is made up of a limestone cliff running along the coast, with a plateau in the centre of the island reaching approximately 60 metres above sea level. The lower level is a coastal terrace approximately 0.5 km wide and about 25–27 metres high, which slopes down and meets the sea in small cliffs. A coral reef surrounds the island, with the only major break in the reef being in the central western coast, close to the capital, Alofi.
WPalau, officially the Republic of Palau and historically Belau, Palaos or Pelew, is an island country located in the western Pacific Ocean. The country contains approximately 340 islands, and together with parts of the Federated States of Micronesia, forms the western chain of the Caroline Islands. Its area is 466 square kilometers (180 sq mi). The most populous island is Koror. The capital Ngerulmud is located on the nearby island of Babeldaob, in Melekeok State. Palau shares maritime boundaries with international waters to the north, Micronesia to the east, Indonesia to the south, and the Philippines to the west.
WPapua New Guinea, officially the Independent State of Papua New Guinea, is a sovereign state in Oceania that occupies the eastern half of the island of New Guinea and its offshore islands in Melanesia, a region of the southwestern Pacific Ocean north of Australia. Its capital, located along its southeastern coast, is Port Moresby. The western half of New Guinea forms the Indonesian provinces of Papua and West Papua. It is the world's third largest island country with 462,840 km2 (178,700 sq mi).
WSamoa, officially the Independent State of Samoa and until 1997 known as Western Samoa, is a Polynesian island country consisting of two main islands, Savai'i and Upolu, two smaller inhabited islands, Manono and Apolima, as well as several small uninhabited islands including the Aleipata Islands. The capital city is Apia. The Lapita people discovered and settled the Samoan Islands around 3,500 years ago. They developed a Samoan language and Samoan cultural identity.
WThe Solomon Islands are a sovereign state consisting of six major islands and over 900 smaller islands in Oceania lying to the east of Papua New Guinea and northwest of Vanuatu and covering a land area of 28,400 square kilometres (11,000 sq mi). The country has a population of 652,858 and its capital, Honiara, is located on the island of Guadalcanal. The country takes its name from the Solomon Islands archipelago, which is a collection of Melanesian islands that also includes the North Solomon Islands, but excludes outlying islands, such as Rennell and Bellona, and the Santa Cruz Islands.
WTonga, officially named the Kingdom of Tonga, is a Polynesian sovereign state and archipelago comprising 169 islands, of which 36 are inhabited. The total surface area is about 750 square kilometres (290 sq mi) scattered over 700,000 square kilometres (270,000 sq mi) of the southern Pacific Ocean. As of 2016, the state had a population of 100,651 people, of whom 70% reside on the main island of Tongatapu.
WTuvalu is an island country in the Polynesian subregion of Oceania, surrounded by the Pacific Ocean and situated about midway between Hawaii and Australia. The country lies east-northeast of the Santa Cruz Islands, northeast of Vanuatu, southeast of Nauru, south of Kiribati, west of Tokelau, northwest of Samoa and Wallis and Futuna, and north of Fiji. It is composed of three reef islands and six atolls spread out between the latitude of 5° to 10° south and longitude of 176° to 180°, west of the International Date Line. Tuvalu has a population of 10,507. The total land area of the islands of Tuvalu is 26 square kilometres (10 sq mi).
WVanuatu, officially the Republic of Vanuatu, is an island country located in the South Pacific Ocean. The archipelago, which is of volcanic origin, is 1,750 kilometres (1,090 mi) east of northern Australia, 540 kilometres (340 mi) northeast of New Caledonia, east of New Guinea, southeast of the Solomon Islands, and west of Fiji.