| Country | Language | Speakers (approx.) | Remark |
|---|
| Albania | Albanian | 3,000,000 | Official language |
| | Greek | 200,000 | Southern Albania |
| Andorra | Catalan | 40,000 | Official language |
| Austria | German | 7,500,000 | Official language |
| | Serbo-Croatian | 25,000 | Burgenland |
| | Slovenian | 20,000 | Carinthia |
| Belgium | Dutch | 5,500,000 | Flanders |
| | French | 3,500,000 | Wallonia |
| | German | 150,000 | Near the German border |
| Bosnia-Hercegovina | Serbo-Croatian | | Official language |
| Bulgaria | Bulgarian | 8,000,000 | Official language |
| | Turkish | 750,000 | |
| Croatia | Serbo-Croatian | | Official language |
| Cyprus | Greek | 500,000 | Southwest |
| | Turkish | 125,000 | Northeast |
| Czech Republic | Czech | 10,000,000 | Official language |
| Denmark | Danish | 5,000,000 | Official language |
| | Faroese | 40,000 | Faroe Islands |
| Estonia | Estonian | 1,000,000 | Official language |
| | Russian | | |
| Finland | Finnish | 4,700,000 | Official language |
| | Swedish | 300,000 | Official language |
| France | French | 55,000,000 | Official language |
| | Provençal | | Provence |
| | German | 1,500,000 | Alsace-Lorraine |
| | Breton | 1,000,000 | Brittany |
| | Catalan | 250,000 | Near the Spanish border (western end) |
| | Basque | 100,000 | Near the Spanish border (eastern end) |
| | Corsu | | Corsica |
| Georgia | Georgian | 3,500,000 | Official language |
| | Abkhasian | 100,000 | Abkhasia |
| | Ossetian | 75,000 | South Ossetia |
| Germany | German | 80,000,000 | |
| | Danish | | Near the Danish border |
| | Sorbian | 50,000 | |
| | Frisian | | |
| Gibraltar | English | | Official language |
| | Spanish | 30,000 | |
| Great Britain | English | 55,000,000 | Official language |
| | Welsh | 600,000 | Wales |
| | Scottish Gaelic | 75,000 | Northern Scotland |
| Greece | Greek | 10,000,000 | Official language |
| | Turkish | 250,000 | Near the Turkish border |
| | Macedonian | 50,000 | Greek Macedonia |
| | Albanian | 50,000 | Near the Albanian border |
| Hungary | Hungarian | 10,000,000 | Official language |
| Iceland | Icelandic | 250,000 | Official language |
| Ireland | English | 3,000,000 | Official language |
| | Irish Gaelic | 500,000 | Official language |
| Italy | Italian | 53,000,000 | Official language |
| | Sardinian | 1,000,000 | Sardinia |
| | Rhaeto-Romanic | 500,000 | Friuli |
| | German | 200,000 | Co-official with Italian in Alto Adige |
| | French | 100,000 | Aosta |
| | Albanian | 75,000 | Southern Italy |
| | Greek | 25,000 | Southern Italy |
| Latvia | Latvian | 1,500,000 | Official language |
| | Russian | | |
| Lithuania | Lithuanian | | |
| Liechtenstein | German | 25,000 | Official language |
| Luxemburg | French | | Official language |
| | Luxemburgian | 350,000 | |
| Macedonia | Macedonian | 1,000,000 | |
| | Albanian | | Eastern Macedonia |
| Malta | Maltese | 400,000 | |
| | English | | |
| Moldavia | Romanian | 2,500,000 | |
| | Russian | | East bank of the Dniepr |
| Monaco | French | 25,000 | Official language |
| the Netherlands | Dutch | 14,000,000 | Official language |
| | Frisian | 300,000 | Co-official with Dutch in Frisia |
| Norway | Norwegian | 4,000,000 | Official language |
| | Lappish | 20,000 | |
| Poland | Polish | | |
| Portugal | Portuguese | | |
| Romania | Romanian | | |
| | Hungarian | | Transylvania |
| | German | | Transylvania |
| Russia | Russian | | |
| | Tatar | | Volga Area |
| | Chuvash | | Chuvash Republic |
| | Bashkir | | Soutwestern slopes of the Urals |
| | Mordvin | | European Russia |
| | Chechen | | Chechenia |
| | Udmurt | | Udmurt Region |
| | Avar | | Caucasus |
| | Mari | | Central European Russia |
| | Kabardian | | Caucasus |
| | Bashkir | | Soutwestern slopes of the Urals |
| | Buryat | | Southern Siberia |
| | Yakut | | Northeastern Siberia |
| | Zyrian | | Komi Region |
| | Permyak | | Komi-Permyak District |
| | Nenets | | North Russia |
| | Ossetian | | South Ossetia |
| | Ostyak | | Western Siberia |
| | Evenki | | Siberia |
| | Chukchi | | Chukchi District |
| San Marino | Italian | | |
| Spain | Spanish | | |
| | Catalan | | |
| | Galician | | Galicia |
| | Basque | | the Basque Country |
| Slovakia | Slovak | | |
| | Hungarian | | Near the Hungarian border |
| Slovenia | Slovenian | | |
| Sweden | Swedish | | |
| Switzerland | German | | Northeastern Switzerland |
| | French | | Western Switzerland |
| | Italian | | Southern Switzerland |
| | French | | Western Switzerland |
| | Rhaeto-Romanic | | Graubünden |
| Turkey | Turkish | 50,000,000 | Official language |
| | Kurdish | 1,500,000 | Southeastern Turkey |
| | Arabic | 300,000 | |
| | Circassian | 75,000 | |
| | Armenian | 50,000 | |
| | Greek | 50,000 | |
| | Georgian | 50,000 | |
| the Ukraine | Ukrainian | | Official language |
| | Russian | | |
| White Russia | Russian | | |
| | White Russian | | |
| Yugoslavia | Serbo-Croatian | | |
| | Albanian | | Kosovo |
| | Hungarian | | Voivodina |