1
Oahu
Third-largest Hawaiian island and home to Honolulu, holding the majority of the state's population.
If you've been searching for islands that start with O, you'll find 4 detailed islands below. We're not interested in giving you only a list of names — every entry on this page links to a full profile with the kind of detail you'd actually want to know.
For islands, that means country, region, archipelago, area, population, and highest point.
List of Islands That Start With O
2
Okinawa
The largest island of the Ryukyu chain in southern Japan, known for coral reefs, U.S. military bases, and its distinct Ryukyuan culture.
3
Oland
Sweden's second-largest island, a long thin landmass in the Baltic Sea linked to the mainland by the country's longest bridge.
4
Orkney
An archipelago of about 70 islands off the north coast of Scotland, rich in Neolithic monuments and Norse heritage.
About islands starting with O
That's our current list of islands starting with the letter O. We add new entries every week — if you have a favorite island starting with O that isn't on this page, let us know and we'll write it up.
Looking for more? Try islands that end with O, or contain O anywhere in the name.