List of shared islands

The majority of all islands belong to the national territory of a single state or are each themselves a state. Islands with international borders are a rare exception that this list of shared islands provides an overview of.

Internationally recognized borders

Currently

Island name	Political Affiliation	Island type	Size in km²	Residents	current limits since
New Guinea	Indonesia Papua New Guinea	Sea island	786,000	7,100,000	1949
Borneo	Brunei Indonesia Malaysia	Sea island	743.122	16,000,000	1963
Ireland	Ireland United Kingdom	Sea island	84,421	5,600,000	1921
Hispaniola	Dominican Republic Haiti	Sea island	74,700	21,679,000	1808
fire land	Argentina Chile	Sea island	47.992	200,000	1881
Timor	Indonesia East Timor	Sea island	33,850	2,900,000	2002
Corocoro	Guyana Venezuela	River island / sea island	690	uninhabited (nature reserve)	1899
Pulau Sebatik	Indonesia Malaysia	Sea island	452	20,000	1891
Usedom	Germany Poland	Sea island	445	76,500	1945/50/89 a
Heixiazi Dao	People's Republic of China Russia	River island	350	?	2008
Saint-Martin / Sint Maarten	France Netherlands	Sea island	93	68,400	1648
Abagaitu Zhouzhu	People's Republic of China Russia	River island	57.56	0	2008
Kataja b	Finland Sweden	Sea island	0.71	0	1809
Passport Island c	Bahrain Saudi Arabia	artificial Sea island	0.66	0	1986 (approx.)
Île de la Province	Canada United States	Sea island	0.31	0
Trolløya / Trollön	Norway Sweden	Sea island	0.11	0
Hisøya / Hisön	Norway Sweden	Sea island	0.08	0
Storøya / Storön (Utgardsjoen)	Norway Sweden	Sea island	0.04	0
Market	Finland Sweden	Sea island	0.033	0	1809/1985
Koiluoto	Finland Russia	Sea island	<0.033	0	1945
Island in the Moselle ( Apach lock ) d	Germany France (? Luxembourg )	River island	0.012	0	1945?
Herb stone	Austria Germany	Rock in the Danube	0.00045	0	...
Treriksröset	Finland Norway Sweden	artificial Sea island	0.00004	0	1926

^a 1950 Regulation due to waterworks for Swinoujscie on Wolgastsee, 1989 definition of the sea border in front of the Swinemünde roadstead.

^bKataja has not been divided since 1809. Originally the border ran in the sea between Kataja and the smaller Russian island Inakari, but these grew together over time due to the uplift of the land .

^cPassport Island was artificially piled up about in the middle of the King Fahd Causeway to handle border formalities.

^dThe unnamed island is mostly in France. The rest is joint German-Luxembourg territory .

Historical (selection)

Island name	Political Affiliation	Island type	Size in km²	current limits since
Great Britain	England Scotland Wales	Sea island	229,850	until 1707
Sakhalin	Russia / Soviet Union Japan	Sea island	76,400	1905-1945
Island of Rebirth e	Kazakhstan Uzbekistan	Lake island, now part of the mainland	-	1991-2002
Sylt	Denmark Duchy of Schleswig	Sea island	99.14	1261-1864
Foehr	Denmark Duchy of Schleswig	Sea island	82.82	1261-1864
Rømø	Denmark Duchy of Schleswig	Sea island	128.86	1261-1864
Masirah f	Oman Hadramaut	Sea island	649	1856

^eThe island of rebirth has not been an island since 2002 due to the silting up of the Aral Sea and the resulting connection with the mainland.

^fMasirah was split between Oman and Hadhar-el-Mout according to a map from 1856 .

Controversial borders

Island name	Political Affiliation	Island type	Size in km²	Residents	current limits since
Cuba	Cuba United States : Guantanamo Bay Naval Base f	Sea island	110,000	11,300,000	1903
Cyprus	Republic of Cyprus Turkish Republic of Northern Cyprus United Kingdom : Akrotiri and Dekelia g	Sea island	9,251	1,000,000	1974 and 1983 respectively

^fThe status of the military base under international law is controversial. The USA invokes an open-ended lease with Cuba. Cuba has not recognized the lease since 1960 at the latest and regards the military base as illegal. The border of the military base has a different character than a US military base z. B. in Germany.

^GAkrotiri and Dekelia are still British sovereign base areas after the independence of Cyprus and are counted by Great Britain to the British overseas territories . The Turkish Republic of Northern Cyprus, proclaimed in 1983, is not recognized by the international community.

Jointly exercised sovereignty ( condominium )

Island name	Political Affiliation	Island type	Size in km²	current limits since
Hans Island	Greenland Canada	Sea island	1.3 km²	2005
Pheasant Island	France Spain	River island	0.0068 km²	1659

See also

• Island nation
• List of shared places

Individual evidence

1. ↑ James Wyld: Arabia (map, 1856)