List of islands by name (O) - AbsoluteAstronomy.com

This article features a list of island

Island

An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, cays or keys. An island in a river or lake may be called an eyot , or holm...

s sorted by their name beginning with the letter O.
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O

Island’s Name	Island group(s)	Country/Countries
Oahu Oahu Oahu or Oahu , known as "The Gathering Place", is the third largest of the Hawaiian Islands and most populous of the islands in the U.S. state of Hawaii. The state capital Honolulu is located on the southeast coast...	Hawaii	United States
Oak Oak Island Oak Island is a island in Lunenburg County on the south shore of Nova Scotia, Canada. The tree-covered island is one of about 360 small islands in Mahone Bay and rises to a maximum of 35 feet above sea level...	Georgian Bay Georgian Bay Georgian Bay is a large bay of Lake Huron, located entirely within Ontario, Canada... (Parry Sound) Ontario	Canada
Óbudai-sziget	Danube River	Hungary
Obstruction Obstruction Island (Washington) Obstruction Island is one of the San Juan Islands in San Juan County, Washington, USA. It lies off the southeast tip of Orcas Island, between it and Blakely Island. Obstruction Island has a land area of 0.882 km² . The 2000 census reported a permanent population of eight...	San Juan Islands San Juan Islands The San Juan Islands are an archipelago in the northwest corner of the contiguous United States between the US mainland and Vancouver Island, British Columbia, Canada. The San Juan Islands are part of the U.S... , Washington	United States
Oconnel	Mississippi River Mississippi River The Mississippi River is the largest river system in North America. Flowing entirely in the United States, this river rises in western Minnesota and meanders slowly southwards for to the Mississippi River Delta at the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains... , Iowa	United States
Ocracoke	North Carolina	United States
Oeno Oeno Island Oeno Island or Holiday Island is a coral atoll in the South Pacific Ocean, part of the Pitcairn Islands overseas territory.-Geography:...	Pitcairn Islands	British overseas territories British overseas territories The British Overseas Territories are fourteen territories of the United Kingdom which, although they do not form part of the United Kingdom itself, fall under its jurisdiction. They are remnants of the British Empire that have not acquired independence or have voted to remain British territories...
Ofidoussa
Ogami	Miyako Islands Miyako Islands The are a group of islands in Okinawa Prefecture, Japan, east of the Yaeyama Islands.-Islands grouping:Japanese ArchipelagoNansei IslandsRyūkyū ShotōSakishima Islands**Miyako Islands-Inhabited islands:Miyako Islands... part of the Ryūkyū proper part of the Nansei Islands	Japan
Oinousses Oinousses Oinousses , alternative forms: Aignoussa or Egnoussa is a barren cluster of 1 larger and 8 smaller islands some 2 km off the north-east coast of the Greek island of Chios and 8 km west of Turkey. Administratively the islands form a municipality within the Chios peripheral unit, which is...		Greece
Oki daitō Oki Daito , also spelled as Oki Daitō or Oki-Daitō, previously known as , is an uninhabited island in the Daitō island group southeast of Okinawa, Japan. It belongs to Kitadaitō Village. It was formally incorporated into Japan in 1900....	Daitō Islands Daito Islands Daitō Islands are three islands that lie about east of Okinawa. From north to south, the islands are:* Data from 2004 Nov 20, 08:55 version of Japanese Wikipedia... part of the Okinawa Islands Okinawa Islands Okinawa Islands are a group of islands that belongs to Okinawa Prefecture. Okinawa Prefecture makes up a portion of the Ryukyu Islands. The prefectural capital Naha, as well as most of the population, exists on the largest island, Okinawa Island... part of the Ryūkyū proper part of the Nansei Islands	Japan
Okikendawt	French River French River (Ontario) The French River is a river in Central Ontario, Canada. It flows from Lake Nipissing west to Georgian Bay. The river largely follows the boundary between the Parry Sound District and the Sudbury District, and in most contexts is considered the dividing line between Northern Ontario and Southern... Ontario	Canada
Okinawa Okinawa Island Okinawa Island is the largest of the Okinawa Islands and the Ryukyu Islands of Japan, and is home to Naha, the capital of Okinawa Prefecture. The island has an area of...	Okinawa Islands Okinawa Islands Okinawa Islands are a group of islands that belongs to Okinawa Prefecture. Okinawa Prefecture makes up a portion of the Ryukyu Islands. The prefectural capital Naha, as well as most of the population, exists on the largest island, Okinawa Island... part of the Ryūkyū proper part of the Nansei Islands	Japan
Okinoerabujima Okinoerabujima is an island in the political boundaries of Ōshima District, Kagoshima Prefecture, Japan and in the Amami Islands.Two towns, Wadomari and China, govern portions of the island.Okinoerabu Airport, in Wadomari, is located on the island.-References:...	Amami Islands Amami Islands The are a group of islands that is part of the Satsunan Islands, which are then part of the Nansei Islands. The islands are part of Kagoshima Prefecture, in the Kyūshū region of Japan... part of the Ryūkyū proper part of the Nansei Islands	Japan
Oland Oland (German island) Oland is a small hallig which is connected by a narrow gauge railway to the mainland and to hallig Langeneß.Germany's smallest lighthouse is located here, being also the only one with a thatched roof....	North Frisian Islands North Frisian Islands The North Frisian Islands are a group of islands in the Wadden Sea, a part of the North Sea, off the western coast of Schleswig-Holstein, Germany. The German islands are in the traditional region of North Frisia and are part of the Schleswig-Holstein Wadden Sea National Park and the Kreis of...	Germany
Öland Öland ' is the second largest Swedish island and the smallest of the traditional provinces of Sweden. Öland has an area of 1,342 km² and is located in the Baltic Sea just off the coast of Småland. The island has 25,000 inhabitants, but during Swedish Midsummer it is visited by up to 500,000 people...		Sweden
Oleron Oléron Île d'Oléron is an island off the Atlantic coast of France , on the southern side of the Pertuis d'Antioche strait....		Early Modern France
Olib Olib Olib is an island in northern Dalmatia, located northwest of Zadar, southwest of Pag, southeast of Lošinj and just east of Silba. The population is 147.-History:...	Northern Dalmatia Dalmatia Dalmatia is a historical region on the eastern coast of the Adriatic Sea. It stretches from the island of Rab in the northwest to the Bay of Kotor in the southeast. The hinterland, the Dalmatian Zagora, ranges from fifty kilometers in width in the north to just a few kilometers in the south....	Independent State of Croatia
Ombo Ombo Ombo is the largest island in the Ryfylke region on the south-west coast of Norway. It is part of the county of Rogaland. It is divided between the two municipalities of Hjelmeland and Finnøy....	Ryfylke Ryfylke Ryfylke is a traditional district in Norway, located northeast of Stavanger and east of Haugesund. In the east it borders Setesdal and Sirdal.Ryfylke comprises the contemporary municipalities of Sauda, Suldal, Finnøy, Hjelmeland, Forsand, Strand, Kvitsøy and Rennesøy... Islands, Rogaland Rogaland is a county in Western Norway, bordering Hordaland, Telemark, Aust-Agder and Vest-Agder. It is the center of the Norwegian petroleum industry, and as a result of this, Rogaland has the lowest unemployment rate of any county in Norway, 1.1%...	Norway
Omelek Omelek Island Omelek Island is part of the Kwajalein Atoll in the Republic of the Marshall Islands. It is controlled by the United States military under a long-term lease and is part of the Ronald Reagan Ballistic Missile Defense Test Site.-Geography:The Island is about in size...	Kwajalein Atoll, Ralik Chain Ralik Chain The Ralik Chain is a chain of islands within the island nation of the Marshall Islands. Ralik means "sunset". It lies just to the west of the country's other island chain, the Ratak Chain...	Marshall Islands
Omø Omø Omø is a Danish island in the Great Belt. The island covers an area of , with a 12-kilometre coastline, and has 168 inhabitants, of which the majority inhabit Omø village, which has a church, and Kirkehavn, a small harbour with a ferry boat berth, along with a newly built marina, made for the...	Great Belt Great Belt The Great Belt is a strait between the main Danish islands of Zealand and Funen . Effectively dividing Denmark in two, the Belt was served by the Great Belt ferries from the late 19th century until the islands were connected by the Great Belt Fixed Link in 1997–98.-Geography:The Great Belt is the...	Denmark
Omolkarm	Persian Gulf Persian Gulf The Persian Gulf, in Southwest Asia, is an extension of the Indian Ocean located between Iran and the Arabian Peninsula.The Persian Gulf was the focus of the 1980–1988 Iran-Iraq War, in which each side attacked the other's oil tankers...	Iran
Ono Ono Island Ono Island is a member of the Kadavu Group, an outlier to Kadavu Island, to the south of Viti Levu, one of Fiji's two main islands. It is separated from Kadavu Island by the Ono Channel. Located at 18.88° South and 178.50° East, this volcanic island is enclosed by the Great Astrolabe Reef. It...	Perdito River, Alabama	United States
Ontong Java	Solomon Islands Solomon Islands Solomon Islands is a sovereign state in Oceania, east of Papua New Guinea, consisting of nearly one thousand islands. It covers a land mass of . The capital, Honiara, is located on the island of Guadalcanal...	Solomon Islands
Orcas Orcas Island Orcas Island is the largest of the San Juan Islands, which are located in the northwestern corner of Washington state in San Juan County, Washington.-History:...	San Juan Islands San Juan Islands The San Juan Islands are an archipelago in the northwest corner of the contiguous United States between the US mainland and Vancouver Island, British Columbia, Canada. The San Juan Islands are part of the U.S... , Washington	United States
Öreg-sziget	Danube River	Hungary
Orfasay Orfasay Orfasay is one of the Shetland Islands.-Geography:Orfasay is a tidal island in Yell Sound, connected to Yell at low tide. This is reflected in the island's name....	Shetland Islands	Kingdom of Scotland
Oronsay Oronsay, Inner Hebrides Oronsay , also sometimes spelt and pronounced Oransay by the local community, is a small tidal island south of Colonsay in the Scottish Inner Hebrides with an area of just over two square miles....	Inner Hebrides Inner Hebrides The Inner Hebrides is an archipelago off the west coast of Scotland, to the south east of the Outer Hebrides. Together these two island chains form the Hebrides, which enjoy a mild oceanic climate. There are 36 inhabited islands and a further 43 uninhabited Inner Hebrides with an area greater than...	Kingdom of Scotland
Orust Orust Orust is an island in western Sweden, and Sweden's third largest island. The largest town on Orust is Henån, where approximately 1,800 inhabitants live...		Sweden
Izu Ōshima Izu Oshima is a volcanic island in the Izu Islands and administered by the Tokyo Metropolitan government, Japan, lies about 100 km south of Tokyo, 22 km east of the Izu Peninsula and 36 km southwest of Bōsō Peninsula. serves as the local government of the island...	Izu Islands Izu Islands The are a group of volcanic islands stretching south and east from the Izu Peninsula of Honshū, Japan. Administratively, they form two towns and six villages; all part of Tokyo. The largest is Izu Ōshima, usually called simply Ōshima....	Japan
Osmussaar Osmussaar Osmussaar is an Estonian island situated in the mouth of the Gulf of Finland in the Baltic Sea, 7.5 km off the Estonian mainland. Administratively the island is part of Noarootsi Parish in Lääne County. Its area is ....	Gulf of Finland Gulf of Finland The Gulf of Finland is the easternmost arm of the Baltic Sea. It extends between Finland and Estonia all the way to Saint Petersburg in Russia, where the river Neva drains into it. Other major cities around the gulf include Helsinki and Tallinn...	Estonia
Ostrów Ostrów Island Ostrów Island is an island on the Baltic Sea, located in the delta of Vistula river. The island composes a portion of the territory of the city of Gdańsk, Poland...	Islands of Gdańsk Islands of Gdansk Part of Gdańsk, Poland is located on a small group of islands in the Baltic Sea. Here is a list of them:Port IslandArea: 25.7 km2Population: 22,167 people.Sobieszewo IslandArea: 34.3 km²population: 3,570 people.Ostrów IslandGranary Island...	Poland
Othonoi Othonoi Othonoi is an island and a former community of the Ionian Islands, Greece. Since the 2011 local government reform it is part of the municipality Corfu, of which it is a municipal unit. It is located northwest of Corfu. Population 663...	Ionian Islands Ionian Islands The Ionian Islands are a group of islands in Greece. They are traditionally called the Heptanese, i.e...	Greece
Otok	Bay of Kotor Bay of Kotor The Bay of Kotor in south-western Montenegro is a winding bay on the Adriatic Sea. The bay, sometimes called Europe's southernmost fjord, is in fact a submerged river canyon of the disintegrated Bokelj River which used to run from the high mountain plateaus of Mount Orjen... Islands	Kingdom of Montenegro
Out Stack Out Stack Out Stack or Ootsta in Shetland, Scotland, is the northernmost of the British Isles, lying immediately to the north of Muckle Flugga and north of the island of Unst. It is one of the North Isles of the Shetland Islands and lies within the Hermaness National Nature Reserve.Out Stack is little more...	Shetland Islands	Kingdom of Scotland
Outer Duck	Lake Huron Lake Huron Lake Huron is one of the five Great Lakes of North America. Hydrologically, it comprises the larger portion of Lake Michigan-Huron. It is bounded on the east by the Canadian province of Ontario and on the west by the state of Michigan in the United States... , Ontario	Canada
Ovau	Shortland Islands Shortland Islands The Shortland Islands are group of islands belonging to the Western Province of the Solomon Islands, at . Named by John Shortland, they lie in the extreme northwest of the country's territory, close to the island of Bougainville, Papua New Guinea. The largest island is Shortland Island...	Solomon Islands
Ovoa	Beira Litoral Beira, Portugal Beira was one of the six traditional provinces or "comarcas" of Portugal.-Administrative history:The medieval province of Beira was divided in 1832 into* Beira Alta Province* Beira Baixa ProvinceBeira Litoral... Islands	Portugal
Oxeia Oxeia Oxeia is a Greek island in the Ionian Sea. It is the chief island in the southern group of the Echinades, part of the Ionian Islands. Oxeia possesses the highest point in the Echinades, 421 m. The mountains of Aitoloakarnania on the mainland are to the northeast...	Ionian Islands Ionian Islands The Ionian Islands are a group of islands in Greece. They are traditionally called the Heptanese, i.e...	Greece
Oxna Oxna Oxna is one of the Scalloway Islands, lying north west of Burra in Shetland, Scotland. Oxna has an area of 68 ha .The island has been uninhabited since World War I, but there is a house which is still used as a holiday home.....	Shetland Islands	Kingdom of Scotland
Owens	Ohio River Ohio River The Ohio River is the largest tributary, by volume, of the Mississippi River. At the confluence, the Ohio is even bigger than the Mississippi and, thus, is hydrologically the main stream of the whole river system, including the Allegheny River further upstream... , Kentucky	United States
Owl		Republic of Ireland
Oyster Rock Oyster Rock Oyster Rock is an island in the Mumbai harbour, Mumbai, India. It is fortified, and owned by the Indian Navy. For a short while, the islet was used as a naval museum. The Maharashtra government had thought of anchoring the decommissioned INS Vikrant on this island....	Maharashtra Maharashtra Maharashtra is a state located in India. It is the second most populous after Uttar Pradesh and third largest state by area in India...	India

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