
Adamstown is the capital of, and the only settlement on, the Pitcairn Islands.

Alofi is the capital of the Pacific Ocean island nation of Niue. With a population of 597 in 2017, Alofi has the distinction of being the second smallest national capital city in terms of population. It consists of the two villages: Alofi North and Alofi South where the government headquarters are located.

Apia is the capital and the largest city in the Samoan Islands. From 1900 to 1919, it was the capital of German Samoa. The city is located on the central north coast of Upolu, Samoa's second largest island. Apia is the only city in Samoa and falls within the political district (itūmālō) of Tuamasaga.

Avarua is a town and district in the north of the island of Rarotonga, and is the national capital of the Cook Islands.

Bairiki is a settlement in South Tarawa of Kiribati. The State House, the National Stadium, the High Commissions of Australia and New Zealand as well as the embassy of China, and most of the Government Ministries are based in Bairiki. Bairiki is administered by the Teinainano Urban Council or TUC. As at the 2010 Census the population of Bairiki was 3,524.

Canberra is the capital city of Australia. Founded following the federation of the colonies of Australia as the seat of government for the new nation, it is Australia's largest inland city and the eighth-largest city overall. The city is located at the northern end of the Australian Capital Territory, 280 km (170 mi) south-west of Sydney and 660 km (410 mi) north-east of Melbourne.

Delap-Uliga-Djarrit (DUD) is the capital and the largest city of the Marshall Islands with 20,301 people. The town is located in Majuro Atoll.

Fagatogo is the Downtown area of Pago Pago, the territorial capital of American Samoa. It is the government, commercial, financial, and shipping center of Tutuila Island. It is also the administrative capital of American Samoa. Fagatogo is the location of the American Samoa Fono (legislature), and is listed in the Constitution of American Samoa as the territory's official seat of government. Its population is 1,737.

Fakaofo, formerly known as Bowditch Island, is a South Pacific Ocean atoll located in the Tokelau Group. The actual land area is only about 3 km², consisting of islets on a coral reef surrounding a central lagoon of some 45 km². According to the 2006 census 483 people officially live on Fakaofo. Of those present 70% belong to the Congregational Church and 22% to the Catholic Church.

Funafuti is an atoll and the capital of the island nation of Tuvalu. It has a population of 6,320 people, making it the country's most populated atoll, with 60.15 percent of Tuvalu's population. It is a narrow sweep of land between 20 and 400 metres wide, encircling a large lagoon 18 km long and 14 km wide. The average depth in the Funafuti lagoon is about 20 fathoms. With a surface of 275 square kilometres (106.2 sq mi), it is by far the largest lagoon in Tuvalu. The land area of the 33 islets aggregates to 2.4 square kilometres (0.9 sq mi), less than one percent of the total area of the atoll. Cargo ships can enter Funafuti's lagoon and dock at the port facilities on Fongafale.
Hagåtña is the capital village of the United States territory of Guam. From the 18th through mid-20th century, it was Guam's population center, but today it is the second smallest of the island's 19 villages in both area and population. However, it remains one of the island's major commercial districts in addition to being the seat of government.

Honiara is the capital city of Solomon Islands, situated on the northwestern coast of Guadalcanal. As of 2017, it had a population of 84,520 people. The city is served by Honiara International Airport and the seaport of Point Cruz, and lies along the Kukum Highway.

Kingston is the administrative centre of the Australian external territory of Norfolk Island. The Norfolk Island Regional Council is based in Kingston. The settlement is the second-oldest in Australia, founded a little over a month after Sydney. It is part of the Kingston and Arthur’s Vale Historic Area World Heritage site.

Majuro is the capital and largest city of the Marshall Islands. It is also a large coral atoll of 64 islands in the Pacific Ocean. It forms a legislative district of the Ratak (Sunrise) Chain of the Marshall Islands. The atoll has a land area of 9.7 square kilometres (3.7 sq mi) and encloses a lagoon of 295 square kilometres (114 sq mi). As with other atolls in the Marshall Islands, Majuro consists of narrow land masses. It has a tropical trade wind climate, with an average temperature of 27 °C (81 °F).

Mata Utu is the capital of Wallis and Futuna, an overseas collectivity of France. It is located on the island of Uvéa (ʻUvea), in the district of Hahake, of which it is also the capital. Its population was 1,029 in 2018. It is one of two ports in Wallis and Futuna, the other being at Leava on Futuna. Hihifo Airport, the main airport accessing the island and city, is 5.6 kilometres (3.5 mi) to the northwest.

Ngerulmud is the seat of government of the Republic of Palau, an island nation in the Pacific Ocean. It replaced Koror City, Palau's largest city, as capital in 2006. The settlement is located in the state of Melekeok on Babeldaob, the country's largest island, located 20 kilometres northeast of Koror City and 2 km northwest of Melekeok City. It is the least-populous capital city in the world.

Nouméa is the capital and largest city of the French special collectivity of New Caledonia. It is situated on a peninsula in the south of New Caledonia's main island, Grande Terre, and is home to the majority of the island's European, Polynesian, Indonesian, and Vietnamese populations, as well as many Melanesians, Ni-Vanuatu and Kanaks who work in one of the South Pacific's most industrialised cities. The city lies on a protected deepwater harbour that serves as the chief port for New Caledonia.

Nukuʻalofa is the capital of Tonga. It is located on the north coast of the island of Tongatapu, in the country's southernmost island group.

Pago Pago is the territorial capital of American Samoa. It is in Maoputasi County on the main island of American Samoa, Tutuila.
Palikir is the capital city of the Federated States of Micronesia located in the western Pacific Ocean. A town of slightly under 5,000 residents, it is part of the larger Sokehs municipality, which had a population of 7,000 as of 2009, out of the nation's total population of 106,487. It is situated on the northwest side of Pohnpei island, a high volcanic island surrounded by a fringing coral reef. Nearby to the northeast is the island's largest settlement, the coastal town of Kolonia. It was declared the capital of Micronesia in 1989.

Papeete is the capital city of French Polynesia, an overseas collectivity of the French Republic in the Pacific Ocean. The commune of Papeete is located on the island of Tahiti, in the administrative subdivision of the Windward Islands, of which Papeete is the administrative capital. The French High Commissioner also resides in Papeete.

Port Moresby, also referred to as Pom City or simply Moresby, is the capital and largest city of Papua New Guinea and the largest city in the South Pacific outside of Australia and New Zealand. It is located on the shores of the Gulf of Papua, on the south-western coast of the Papuan Peninsula of the island of New Guinea. The city emerged as a trade centre in the second half of the 19th century. During World War II it was a prime objective for conquest by the Imperial Japanese forces during 1942–43 as a staging point and air base to cut off Australia from Southeast Asia and the Americas.

Port Vila, or simply Vila, is the capital and largest city of Vanuatu and is on the island of Efate.

Saipan is the largest island of the Northern Mariana Islands, a commonwealth of the United States in the western Pacific Ocean. According to 2017 estimates by the United States Census Bureau and the Commonwealth's Department of Commerce, Saipan's population was 47,565.

South Tarawa is the capital and hub of the Republic of Kiribati and home to more than half of Kiribati's population. The South Tarawa population centre consists of all the small islets from Betio in the west to Bonriki and Tanaea in the north-east, connected by the South Tarawa main road, with a population of 56,388 as of 2015.

Suva is the capital and largest metropolitan city in Fiji. It is located on the southeast coast of the island of Viti Levu, in the Rewa Province, Central Division.

Tarawa is an atoll and the capital of the Republic of Kiribati, in the central Pacific Ocean. It comprises North Tarawa, which has 6,629 inhabitants and much in common with other more remote islands of the Gilberts group, and South Tarawa, which has 56,388 inhabitants as of 2015, half of the country's total population. The atoll was the site of the Battle of Tarawa during World War II.

Wellington is the capital city of New Zealand. It is located at the south-western tip of the North Island, between Cook Strait and the Remutaka Range. Wellington is the major population centre of the southern North Island, and is the administrative centre of the Wellington Region, which also includes the Kapiti Coast and the Wairarapa. It is the world's southernmost capital of a sovereign state. Wellington features a temperate maritime climate, and is the world's windiest city by average wind speed.

Yaren, is a district of the Pacific nation of Nauru. It is the de facto capital of Nauru and is coextensive with Yaren Constituency.