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Countries A to Z

Countries That Start With O

Only one country starts with O: Oman, in Asia. Its capital is Muscat and it has about 5.3 million people.

The country that starts with O

Country Capital People
Flag of Oman Oman Asia Muscat 5.3 million

Populations are rounded recent national or UN estimates. Names follow the Quiz Zoomies list of 195 countries (193 UN members plus Vatican City and Palestine).

Facts about countries that start with O

  • Oman covers 309,500 km² in Western Asia.
  • Oman is the only country name in the world that begins with O.

Quiz: countries that start with O

2 quick questions: name each flag, then each capital. Type your answer and press Enter.

Countries That Start With O Quiz

Type your answer and press Enter. Spelling is forgiving: capitals, accents and punctuation do not matter.

Frequently asked questions

How many countries start with O?

1 country starts with O: Oman.

Is Oman the only country that starts with O?

Yes. Oman is the only one of the 195 countries whose name starts with O. Its capital is Muscat.

How many capital cities start with O?

3: Oslo, Ottawa, and Ouagadougou.

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