The most likely country that could be referred to as having no capital is Vatican City (in the centre of Rome, Italy) because the whole country (0.44 sqkm) is it's own city. Nauru also has no capital because it lacks any sizable population. However, most its leadership governs from the Yaren District. Switzerland is probably the biggest country with no official capital because of "De jure". Bern is the de facto capital while Zurich is the largest city in the country.
Some other countries that have the same capital name as the country are:
Djbouti (Africa)
Luxembourg (Europe)
San Marino (Europe)
Panama (Central America)
Singapore (Asia)
Monaco (Europe)
Countries have capitals cities. They do not have capital countries.
There are two capital cities named after their countries: Bern is the capital of Switzerland, and Madrid is the capital of Spain.
That is the capital and largest city in Nepal.
Colombia's capital city is Bogotá.
Managua is the capital city of Nicaragua.
Quito is the capital city of Ecuador.
Manila is the capital of the Philippines.
There are no countries in Canberra. It is a city, the capital of Australia.
The capitals of the countries that border South Africa are: Namibia - capital is Windhoek. Swaziland - capital is Mbabane Botswana - capital is Gaberone Lesotho - capital is Maseru Zimbabwe - capital is Harare Mozambique - capital is Maputo
Almost all of them have a capital. Some have two or three.
Vienna is the capital and largest city of Austria.
All countries but Nauru have an official capital.