There are only 51 national capitals in Europe:
Reykjavik, Iceland
Dublin, Ireland
London, United Kingdom
Lisbon, Portugal
Madrid, Spain
Andorra la Vella, Andorra
Paris, France
Monaco, Monaco
Valletta, Malta
Vatican City, Vatican City
San Marino, San Marino
Rome, Italy
Vienna, Austria
Vaduz, Liechtenstein
Berne, Switzerland
Luxembourg, Luxembourg
Brussels, Belgium
Amsterdam, the Netherlands
Copenhagen, Denmark
Berlin, Germany
Oslo, Norway
Stockholm, Sweden
Helsinki, Finland
Moscow, Russia
Tallinn, Estonia
Riga, Latvia
Vilnius, Lithuania
Warsaw, Poland
Prague, Czech Republic
Bratislava, Slovakia
Budapest, Hungary
Ljubljana, Slovenia
Zagreb, Croatia
Sarajevo, Bosnia and Herzegovina
Podgorica, Montenegro
Tirana, Albania
Athens, Greece
Nicosia, Cyprus
Ankara, Turkey
Astana, Kazakhstan
Baku, Azerbaijan
Yerevan, Armenia
Tbilisi, Georgia
Sofia, Bulgaria
Skopje, Macedonia
Pristina, Kosovo
Belgrade, Serbia
Bucharest, Romania
Chisinau, Moldova
Kiev, Ukraine
Minsk, Belarus
Yes. London is the capital of England. It is one of many capital cities in Europe. Europe is a continent, so it has many countries each with their own capital city. There is no capital of Europe, as Europe is not a country.
Ireland is a country, not a city, and Europe is a continent not a country, so Ireland is not the capital city of anywhere, and Europe does not have a capital city. Ireland is a country in Europe. Dublin is the capital of Ireland and the various other countries in Europe all have their own capital cities.
Europe has no official capital city. However, the city of Brussel, Belgium is the unofficial capital city of the European Union.
Nicosia in Cyprus is the southernmost capital city in Europe.
No, Europe is a continent, not a city.
Europe has no capital city as it is a continent and not a country.
Vatican City is the capital of Vatican City.
Europe's smallest capital city is Valletta, the capital city of Malta. It has a population of 6,098 as per 2008 official estimates.
Vaduz, the capital city of Liechtenstein, Europe
Yes. Oslo is the capital of Europe.
Moscow is the most populated capital city in Europe.
The capital of Crimea, Europe is Sevastopol