Island Countries List — All 47 Island Nations (2025)
47 sovereign island countries sit entirely on islands or archipelagos — from Indonesia’s 17,000+ island chain to Nauru’s single 21 km² coral island. They span every ocean, represent about 24% of the world’s countries, and face some of the most urgent climate challenges on Earth.
Quick Answer
How Many Island Countries Are There?
island countries in the world as of 2025
There are 47 island countries in the world under this site’s inclusive sovereign island-state standard: independent countries whose territory or primary territory is island-based.
- Pacific14 countries
- Caribbean13 countries
- Indian Ocean6 countries
- Atlantic5 countries
- Mediterranean2 countries
- SE Asia5 countries
- Other2 countries
Largest: 🇮🇩 Indonesia (1,904,569 km² · 17,508 islands). Smallest: 🇳🇷 Nauru (21 km² · 1 island).
Complete List of All 47 Island Countries
Every sovereign island nation on Earth in this reference standard — searchable by country, capital, region, ocean, and key facts.
Showing 47 of 47 island countries
🏛️ Tokyo · 🏝️ 14,125 islands · 🌊 Pacific Ocean
Island economy, ancient monarchy, and seismic Ring of Fire geography.
377,975 km²
125.7M
🏛️ Manila · 🏝️ 7,641 islands · 🌊 Pacific Ocean
A 7,641-island archipelago where more than 180 languages are spoken.
300,000 km²
115M
🏛️ Jakarta · 🏝️ 17,508 islands · 🌊 Pacific / Indian Ocean
World’s largest archipelago nation and 4th most populous country.
1,904,569 km²
277M
🏛️ Port Moresby · 🏝️ 600+ islands · 🌊 Pacific Ocean
The most linguistically diverse country on Earth, with more than 840 living languages.
462,840 km²
10.3M
🏛️ Wellington · 🏝️ 700+ islands · 🌊 Pacific Ocean
The first self-governing country to give women the vote and the real-world Middle-earth.
270,467 km²
5.1M
🏛️ Canberra · 🏝️ Continental island + 8,000+ smaller islands · 🌊 Pacific / Indian Ocean
A continent-sized island nation with ancient cultures, red deserts, reefs, and unique wildlife.
7,692,024 km²
26.5M
🏛️ Suva · 🏝️ 333 islands · 🌊 Pacific Ocean
A 333-island meeting place where Melanesian and Indo-Fijian cultures collide.
18,274 km²
930K
🏛️ Honiara · 🏝️ 900+ islands · 🌊 Pacific Ocean
A coral-rich archipelago where some of World War II's fiercest Pacific battles were fought.
28,896 km²
720K
🏛️ Port Vila · 🏝️ 80+ islands · 🌊 Pacific Ocean
A volcanic island chain with living kastom traditions and active volcanoes you can hike.
12,189 km²
330K
🏛️ Apia · 🏝️ 9 islands · 🌊 Pacific Ocean
The heart of Polynesia, where the fa'asamoa way of life has endured for millennia.
2,842 km²
222K
🏛️ Nukuʻalofa · 🏝️ 169 islands · 🌊 Pacific Ocean
The only Pacific nation never colonized, still ruled by a Polynesian monarchy.
747 km²
100K
🏛️ South Tarawa · 🏝️ 33 atolls islands · 🌊 Pacific Ocean
Spread across the equator and the International Date Line.
811 km²
121K
🏛️ Palikir · 🏝️ 607 islands · 🌊 Pacific Ocean
A federation of 607 islands scattered across an ocean space the size of the United States.
702 km²
115K
🏛️ Majuro · 🏝️ 29 atolls islands · 🌊 Pacific Ocean
Low-lying atolls shaped by nuclear-test history and climate risk.
181 km²
42K
🏛️ Ngerulmud · 🏝️ 340+ islands · 🌊 Pacific Ocean
A marine conservation leader known for Jellyfish Lake and one of the world's largest sanctuaries.
459 km²
18K
🏛️ Yaren · 🏝️ 1 island · 🌊 Pacific Ocean
World’s smallest island nation: one coral island of 21 km².
21 km²
10.8K
🏛️ Funafuti · 🏝️ 9 atolls islands · 🌊 Pacific Ocean
Earns major revenue from the .tv domain and faces existential sea-level risk.
26 km²
11K
🏛️ Dili · 🏝️ 1 main island + Oecusse island · 🌊 Timor Sea / Pacific
One of the world's youngest nations, independent since 2002.
14,874 km²
1.3M
🏛️ Havana · 🏝️ 1 main island + 4,195 smaller island · 🌊 Caribbean Sea
Largest Caribbean island and one of the region’s geopolitical giants.
109,884 km²
11.3M
🏛️ Port-au-Prince · 🏝️ Hispaniola (shared) islands · 🌊 Caribbean Sea
The world's first Black republic, born from the only successful slave revolt in history.
27,750 km²
11.7M
🏛️ Santo Domingo · 🏝️ Hispaniola (shared) islands · 🌊 Caribbean Sea
Home to the first permanent European settlement in the Americas.
48,671 km²
11.2M
🏛️ Kingston · 🏝️ 1 main island · 🌊 Caribbean Sea
The birthplace of reggae, Bob Marley, jerk cooking, and some of history's fastest sprinters.
10,991 km²
2.8M
🏛️ Port of Spain · 🏝️ 2 main islands · 🌊 Caribbean Sea
The birthplace of calypso, soca, carnival energy, and the steelpan instrument.
5,128 km²
1.4M
🏛️ Nassau · 🏝️ 700 islands and cays islands · 🌊 Atlantic Ocean / Caribbean region
A low-lying archipelago famous for blue holes, coral banks, and Columbus's 1492 landfall.
13,943 km²
393K
🏛️ Bridgetown · 🏝️ 1 island · 🌊 Atlantic Ocean / Caribbean region
The birthplace of rum and one of the Caribbean's most stable democracies.
430 km²
281K
🏛️ Castries · 🏝️ 1 island · 🌊 Caribbean Sea
A volcanic island whose Nobel Prize winners per capita are unmatched.
616 km²
184K
🏛️ St. George's · 🏝️ 7 islands · 🌊 Caribbean Sea
The Spice Isle, with a national flag that features a nutmeg.
344 km²
124K
🏛️ Kingstown · 🏝️ 32 islands and cays islands · 🌊 Caribbean Sea
A 32-island sailing country of volcanic peaks and clear Grenadine waters.
389 km²
110K
🏛️ Saint John's · 🏝️ 3 islands · 🌊 Caribbean Sea
A twin-island state that claims 365 beaches, one for every day of the year.
442 km²
100K
🏛️ Roseau · 🏝️ 1 island · 🌊 Caribbean Sea
The Nature Isle, where volcanic heat feeds a real boiling lake.
751 km²
72K
🏛️ Basseterre · 🏝️ 2 islands · 🌊 Caribbean Sea
The smallest sovereign state in the Western Hemisphere.
261 km²
53K
🏛️ London · 🏝️ Great Britain + 6,000+ smaller islands · 🌊 North Atlantic
An island state that once built the largest empire in history.
242,495 km²
67.7M
🏛️ Dublin · 🏝️ 1 main island · 🌊 North Atlantic
The Emerald Isle, whose diaspora shaped America, Australia, and beyond.
70,273 km²
5.1M
🏛️ Reykjavik · 🏝️ 1 main island · 🌊 North Atlantic
Volcanic North Atlantic island powered by geothermal and hydro energy.
103,000 km²
376K
🏛️ Praia · 🏝️ 10 islands · 🌊 Atlantic Ocean
A volcanic archipelago off West Africa and the birthplace of morna music.
4,033 km²
593K
🏛️ São Tomé · 🏝️ 2 main islands · 🌊 Atlantic Ocean
Tiny Gulf of Guinea islands producing some of the world's finest single-origin chocolate.
964 km²
228K
🏛️ Antananarivo · 🏝️ 1 main island · 🌊 Indian Ocean
A biodiversity world apart, with most wildlife found nowhere else.
587,041 km²
28M
🏛️ Sri Jayawardenepura Kotte · 🏝️ 1 main island · 🌊 Indian Ocean
The Pearl of the Indian Ocean, known for tea, spices, temples, and monsoon trade.
65,610 km²
22M
🏛️ Malé · 🏝️ 1,192 coral island · 🌊 Indian Ocean
World’s lowest-lying country and a luxury tourism icon.
298 km²
521K
🏛️ Port Louis · 🏝️ 1 main island + several smaller island · 🌊 Indian Ocean
Where the dodo lived and where African, Asian, and European cultures meet.
2,040 km²
1.3M
🏛️ Victoria · 🏝️ 115 islands · 🌊 Indian Ocean
Home to coco de mer palms, giant tortoises, granite islands, and coral reefs.
455 km²
99K
🏛️ Moroni · 🏝️ 3 main islands · 🌊 Indian Ocean
A volcanic archipelago between Madagascar and Mozambique with Swahili, Arab, and French influences.
2,235 km²
870K
🏛️ Nicosia · 🏝️ 1 island · 🌊 Mediterranean Sea
The mythic birthplace of Aphrodite and a divided island at the edge of Europe and Asia.
9,251 km²
1.2M
🏛️ Valletta · 🏝️ 3 islands · 🌊 Mediterranean Sea
A tiny EU island state with temples older than Stonehenge and a fortress capital.
316 km²
535K
🏛️ Manama · 🏝️ 50+ natural and artificial islands · 🌊 Persian Gulf / Indian Ocean
A Gulf island kingdom whose pearl-diving history predates its oil wealth.
786 km²
1.5M
🏛️ Singapore · 🏝️ 1 main island + 60+ smaller island · 🌊 Singapore Strait
A city-state island that became one of the world's most important ports and finance hubs.
735 km²
5.9M
🏛️ Bandar Seri Begawan · 🏝️ Borneo island state islands · 🌊 South China Sea
A small Borneo sultanate with rainforest reserves and one of the world's longest-ruling monarchies.
5,765 km²
449K
Island Countries by Ocean and Region
From the vast Pacific to the ancient Mediterranean, island nations form distinct ocean neighborhoods.
Pacific — 14 Island Countries
🇦🇺🇳🇿🇵🇬🇫🇯🇸🇧The Pacific island countries span Melanesia, Micronesia, Polynesia, and continent-scale Australia across the world’s largest ocean.
Papua New Guinea · New Zealand · Australia · Fiji · Solomon Islands · Vanuatu · Samoa · Tonga · Kiribati · Micronesia · Marshall Islands · Palau · Nauru · Tuvalu
Kiribati, Marshall Islands, Nauru, and Tuvalu face critical climate risk.
Caribbean — 13 Island Countries
🇨🇺🇯🇲🇭🇹🇩🇴🇧🇧The Caribbean has the densest cluster of sovereign island nations, shaped by Indigenous history, empires, slavery, resistance, music, and hurricanes.
Cuba · Haiti · Dominican Republic · Jamaica · Trinidad and Tobago · Bahamas · Barbados · Saint Lucia · Grenada · Saint Vincent & Grenadines · Antigua and Barbuda · Dominica · Saint Kitts and Nevis
Most Caribbean island countries face high storm-surge and hurricane risk.
Indian Ocean — 6 Island Countries
🇲🇬🇲🇻🇱🇰🇲🇺🇸🇨Indian Ocean island nations range from biodiversity-rich Madagascar to the coral atolls of the Maldives and the tourism economies of Mauritius and Seychelles.
Madagascar · Sri Lanka · Maldives · Mauritius · Seychelles · Comoros
The Maldives is one of the most climate-vulnerable countries on Earth.
Atlantic — 5 Island Countries
🇬🇧🇮🇪🇮🇸🇨🇻🇸🇹Atlantic island countries include North Atlantic powers, volcanic Iceland, and tropical island states off West Africa.
United Kingdom · Ireland · Iceland · Cape Verde · São Tomé and Príncipe
Cape Verde and São Tomé and Príncipe face greater coastal and storm vulnerability than Iceland, Ireland, or the UK.
Mediterranean — 2 Island Countries
🇨🇾🇲🇹Cyprus and Malta are the Mediterranean’s sovereign island countries, both with deep ancient history and modern EU membership.
Cyprus · Malta
Mediterranean island states face heat, drought, and coastal-pressure risks.
SE Asia — 5 Island Countries
🇮🇩🇵🇭🇸🇬🇧🇳🇧🇭Southeast Asian island states include Indonesia, the Philippines, Singapore, Brunei, and Bahrain under this broad 47-country island-state lens.
Philippines · Indonesia · Bahrain · Singapore · Brunei
Indonesia and the Philippines face high exposure to storms, flooding, and seismic hazards.
Other — 2 Island Countries
🇯🇵🇹🇱Other island states in this list include Japan and Timor-Leste, whose geography does not fit cleanly into the simplified ocean-region buckets.
Japan · Timor-Leste
Japan faces earthquake and tsunami risk; Timor-Leste faces coastal and development vulnerability.
Largest and Smallest Island Countries
The scale ranges from continent-sized Australia and archipelago giant Indonesia to Nauru and Tuvalu.
Top 10 Largest Island Countries by Area
Pacific · A continent-sized island nation with ancient cultures, red deserts, reefs, and unique wildlife.
SE Asia · World’s largest archipelago nation and 4th most populous country.
Indian Ocean · A biodiversity world apart, with most wildlife found nowhere else.
Pacific · The most linguistically diverse country on Earth, with more than 840 living languages.
SE Asia · A 7,641-island archipelago where more than 180 languages are spoken.
Pacific · The first self-governing country to give women the vote and the real-world Middle-earth.
Atlantic · An island state that once built the largest empire in history.
Caribbean · Largest Caribbean island and one of the region’s geopolitical giants.
Atlantic · Volcanic North Atlantic island powered by geothermal and hydro energy.
Top 10 Smallest Island Countries by Area
Pacific · Earns major revenue from the .tv domain and faces existential sea-level risk.
Pacific · Low-lying atolls shaped by nuclear-test history and climate risk.
Mediterranean · A tiny EU island state with temples older than Stonehenge and a fortress capital.
Caribbean · A 32-island sailing country of volcanic peaks and clear Grenadine waters.
Caribbean · The birthplace of rum and one of the Caribbean's most stable democracies.
Caribbean · A twin-island state that claims 365 beaches, one for every day of the year.
The World’s Most Remote Island Countries
Some island nations require long ocean crossings, limited flight routes, or multi-day boat journeys.
Remote #1
Tuvalu
Tuvalu is one of Earth’s most isolated countries: nine low-lying atolls across a huge ocean area, with a runway that also functions as community space.
Remote #2
Kiribati
Kiribati’s 33 atolls are scattered across millions of square kilometers, making it one of the world’s most spread-out sovereign states.
Remote #3
Marshall Islands
The Marshall Islands are remote atolls shaped by ocean navigation, nuclear-test history, and rising-sea risk.
Remote #4
Nauru
Nauru is a single coral island with one ring road, no natural harbor, and a geography that makes every connection matter.
Remote #5
Palau
Palau is easier to reach than central Pacific atolls, but still strikingly isolated for a sovereign country with only about 18,000 people.
Island Countries at Risk — The Climate Crisis Frontline
For low-lying island nations, rising seas, storm surge, saltwater intrusion, and coral loss are present-day realities.
Maldives
⚠️ Critical Climate RiskThe Maldives is the world’s lowest-lying country. Its coral islands power a luxury tourism economy while facing regular flooding and long-term relocation questions.
Tuvalu
⚠️ Critical Climate RiskTuvalu has pursued a digital nation strategy and signed the Falepili Union with Australia, creating migration pathways as sea levels rise.
Kiribati
⚠️ Critical Climate RiskKiribati has explored land purchases and migration pathways as king tides and saltwater intrusion pressure low atolls.
Marshall Islands
⚠️ Critical Climate RiskThe Marshall Islands faces overlapping nuclear legacy and climate risks, including concern about low-lying radioactive waste containment sites.
6 Extraordinary Island Countries
Every island nation has a story shaped by its ocean. These six show the range of the island-country experience.
🇮🇩 Indonesia — The Archipelago Giant
ExploreArea: 1,904,569 km² · Population: 277M · Capital: Jakarta
Indonesia is the world’s largest archipelago nation, stretching thousands of kilometers across the equator. Its islands contain volcanoes, rainforests, megacities, coral reefs, and extraordinary biodiversity. Jakarta’s sinking and the planned capital move to Nusantara make Indonesia central to the future of island-state urban planning.
🇯🇵 Japan — The Island Economy
ExploreArea: 377,975 km² · Population: 125.7M · Capital: Tokyo
Japan’s island geography shaped an advanced maritime civilization with selective cultural exchange, strong regional identities, and dense coastal settlement. It is also one of the world’s most earthquake-ready countries because of its location on major tectonic boundaries.
🇮🇸 Iceland — Fire and Ice
ExploreArea: 103,000 km² · Population: 376K · Capital: Reykjavik
Iceland sits where tectonic plates pull apart, creating volcanoes, geothermal fields, lava landscapes, and glaciers. Its small population has built one of the world’s most distinctive high-latitude island societies.
🇲🇬 Madagascar — The Lost Continent
ExploreArea: 587,041 km² · Population: 28M · Capital: Antananarivo
Madagascar’s long isolation produced ecosystems found nowhere else on Earth. Its biodiversity is globally important, but poverty, deforestation, and climate pressures make conservation urgent.
🇲🇻 Maldives — Paradise Under Threat
ExploreArea: 298 km² · Population: 521K · Capital: Malé
The Maldives is both a dream destination and a climate-warning symbol. Its islands are scattered across the Indian Ocean, but the country’s average elevation is so low that sea-level rise threatens its long-term habitability.
🇨🇺 Cuba — The Caribbean Giant
ExploreArea: 109,884 km² · Population: 11.3M · Capital: Havana
Cuba is the Caribbean’s largest island country and one of its most historically consequential. Revolution, embargo, music, medicine, education, and Caribbean culture all converge on one island.
Surprising Facts About Island Countries
Surrounded by water, full of extraordinary stories.
🇹🇻 Tuvalu earns millions from .tv
Tuvalu’s country-code domain is valuable to television, streaming, and media brands. For a tiny atoll state, a digital suffix has become a nationally important asset.
🇰🇮 Kiribati spans unusual time geography
Kiribati’s islands cross the equator and stretch across the International Date Line region, making timekeeping and national unity unusually complex.
🇲🇹 Malta has temples older than Stonehenge
Malta’s megalithic temples are among the oldest freestanding stone structures in the world, older than Stonehenge and the pyramids.
🇯🇵 Japan feels earthquakes constantly
Japan sits near multiple tectonic plate boundaries and has developed some of the world’s most advanced earthquake preparedness systems.
🇮🇩 Indonesia is building a new capital
Jakarta’s flooding and land subsidence helped drive Indonesia’s plan to build Nusantara on Borneo as a new capital city.
🇱🇨 Saint Lucia has remarkable Nobel density
Saint Lucia has produced two Nobel laureates despite its small population, making it one of the world’s standout countries per capita.
Frequently Asked Questions
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