List of islands by name (O)

This article features a list of islands sorted by their name beginning with the letter O.

This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources.

O

Island's Name	Island group(s)	Country/Countries
Oahu	Hawaii	United States
Oak	Georgian Bay (Parry Sound) Ontario	Canada
Óbudai-sziget	Danube River	Hungary
Obstruction	San Juan Islands, Washington	United States
Oconnel	Mississippi River, Iowa	United States
Ocracoke	North Carolina	United States
Oeno	Pitcairn Islands	British overseas territories
Ofidoussa
Ogami Island	Miyako Islands part of the Sakishima Islands part of the Ryukyu Islands	Japan
Oinousses		Greece
Oki daitō	Daitō Islands part of the Ryukyu Islands	Japan
Okikendawt	French River Ontario	Canada
Okinawa	Okinawa Islands part of the Ryukyu Islands	Japan
Okinoerabujima	Amami Islands part of the Satsunan Islands part of the Ryukyu Islands	Japan
Öland	North Frisian Islands	Germany
Öland		Sweden
Oleron		France
Olib	Northern Dalmatia	Croatia
Ombo	Ryfylke Islands, Rogaland	Norway
Omelek	Kwajalein Atoll, Ralik Chain	Marshall Islands
Omø	Great Belt	Denmark
Omolkarm	Persian Gulf	Iran
Ono	Perdito River, Alabama	United States
Ontong Java	Solomon Islands	Solomon Islands
Orcas	San Juan Islands, Washington	United States
Öreg-sziget	Danube River	Hungary
Orfasay	Shetland Islands	Scotland
Oronsay	Inner Hebrides	Scotland
Orust		Sweden
Izu Ōshima	Izu Islands	Japan
Osmussaar	Gulf of Finland	Estonia
Ostrów	Islands of Gdańsk	Poland
Othonoi	Ionian Islands	Greece
Otok	Bay of Kotor Islands	Montenegro
Out Stack	Shetland Islands	Scotland
Outer Duck	Lake Huron, Ontario	Canada
Ovau	Shortland Islands	Solomon Islands
Ovoa	Beira Litoral Islands	Portugal
Oxeia	Ionian Islands	Greece
Oxna	Shetland Islands	Scotland
Owens	Ohio River, Kentucky	United States
Owl		Ireland
Oyster Rock	Maharashtra	India

See also

• List of islands (by country)
• List of islands by area
• List of islands by population
• List of islands by highest point