OmanCountries That Start With O at a Glance
Only one country starts with the letter O: Oman.
- Countries starting with O
- 1
- Capitals starting with O
- 3
- Counted
- 195 countries: UN members, Vatican City, Palestine
About Oman
Oman is in Asia. Its capital is Muscat, it covers 309,500 kmยฒ and it has about 5.5 million people. More about Oman.
Capital Cities That Start With O
3 capitals start with O: Oslo (Norway), Ottawa (Canada) and Ouagadougou (Burkina Faso).
Frequently Asked Questions
How many countries start with O?
One: Oman.
Which capital cities start with O?
Oslo, Ottawa and Ouagadougou.
Is there a country that starts with X?
No. X is the only letter that begins neither a country nor a capital city.
Which letter has the most countries?
S, with 26 countries, followed by M with 18 and B with 17.
Made by Kashif Sulehria in Lahore, Pakistan. Updated September 28, 2026.