Complete List of All Oceania Countries (Alphabetical Order)

Oceania comprises 14 internationally recognized sovereign nations across Australasia, Melanesia, Micronesia, and Polynesia. Explore the Complete List of All Oceania Countries, covering every sovereign nation and territory in this diverse region. From Australia and New Zealand to the island nations of Fiji, Samoa, and Papua New Guinea, this list provides a quick reference for travelers, students, and geography enthusiasts alike. Each entry highlights key facts, including location, population, and cultural insights, helping you understand Oceania’s rich diversity. Whether you’re planning a trip, studying the region, or simply curious, this alphabetical guide makes it easy to explore every country across the vast Pacific landscape.

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Overview of Oceania

Quick Facts About the Continent

  • Total land area: ~8.51 million km² (Australia makes up 90% of it)
  • Population (Dec 2025 est.): ~47 million
  • Largest country by area & population: Australia
  • Smallest country by area: Nauru (21 km²)
  • Smallest country by population: Tuvalu (~11,000) and Nauru (~12,500)
  • Number of sovereign countries: 14
  • Sub-regions: Australasia, Melanesia, Micronesia, Polynesia
  • Oceans surrounding it: Pacific Ocean & Indian Ocean
  • Highest point: Mount Wilhelm, Papua New Guinea (4,509 m) – if excluding Australia’s Kosciuszko (2,228 m)
  • Most spoken languages: English, Tok Pisin, French, Hindi, Māori, indigenous languages
  • Currencies: AUD, NZD, USD, FJD, PGK + several others

How Many Countries Are in Oceania?

There are 14 universally recognized sovereign countries in Oceania. Below is the Official list of the 14 sovereign nations

  • Australia
  • New Zealand
  • Fiji
  • Papua New Guinea
  • Solomon Islands
  • Vanuatu
  • Micronesia (Federated States of)
  • Kiribati
  • Marshall Islands
  • Nauru
  • Palau
  • Samoa
  • Tonga
  • Tuvalu

Oceania Countries by Population (as of December 2025)

The following table ranks the countries of Oceania by population from largest to smallest, based on UN estimates and projections for December 2025.

Rank Country Population % of Oceania Population
1 Australia 27 million 57.9%
2 Papua New Guinea 10.8 million 23.1%
3 New Zealand 5.3 million 11.3%
4 Fiji 0.93 million 2.0%
5 Solomon Islands 0.75 million 1.6%
6 Vanuatu 0.33 million 0.7%
7 Federated States of Micronesia 0.12 million 0.3%
8 Kiribati 0.14 million 0.3%
9 Tonga 0.11 million 0.2%
10 Samoa 0.23 million 0.5%
11 Palau 0.02 million 0.04%
12 Marshall Islands 0.04 million 0.09%
13 Tuvalu 0.01 million 0.02%
14 Nauru 0.01 million 0.02%

Oceania Countries by Area (from Largest to Smallest)

The following table ranks the countries of Oceania by land area from largest to smallest.

Rank Country Area (km²) % of Oceania's Land Area
1 Australia 7,682,300 90.5%
2 Papua New Guinea 452,860 5.3%
3 New Zealand 264,537 3.1%
4 Fiji 18,270 0.2%
5 Solomon Islands 28,896 0.3%
6 Vanuatu 12,189 0.1%
7 Federated States of Micronesia 702 0.008%
8 Kiribati 811 0.01%
9 Tonga 748 0.009%
10 Samoa 2,831 0.03%
11 Palau 459 0.005%
12 Marshall Islands 181 0.002%
13 Tuvalu 26 0.0003%
14 Nauru 21 0.0002%

Ready to Explore the Pacific?

From the Great Barrier Reef in Australia to the pristine lagoons of Palau and the cultural heart of Polynesia, Oceania offers unforgettable island adventures.

Plan Your Oceania Adventure

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