Countries that start with O
There is one country whose name begins with the letter O.
- Oman is the only country in our directory whose English short name starts with O. Its capital is Muscat and it has about 5.7 million people.
Capital cities that start with O
3 national capitals begin with O — all in countries whose names start with a different letter.
- Oslo — capital of Norway
- Ottawa — capital of Canada
- Ouagadougou — capital of Burkina Faso
Countries are listed under their common English short name, so Côte d’Ivoire appears as Ivory Coast and Czechia as Czech Republic. The full A–Z list shows every country on one page.