This list contains all unique languages recognized at the official level (EU-wide, National, or Regional) within the 27 EU member states, sorted alphabetically.
| Language | Official Status | Primary Member State(s) |
|---|---|---|
| Basque | Regional Official | Spain |
| Bulgarian | EU Official | Bulgaria |
| Catalan | Regional Official | Spain |
| Croatian | EU Official | Croatia |
| Czech | EU Official | Czechia |
| Danish | EU Official | Denmark |
| Dutch | EU Official | Belgium, Netherlands |
| English | EU Official | Ireland, Malta |
| Estonian | EU Official | Estonia |
| Finnish | EU Official | Finland |
| French | EU Official | Belgium, France, Luxembourg |
| Frisian | Regional Official | Netherlands |
| Galician | Regional Official | Spain |
| German | EU Official | Austria, Belgium, Germany, Luxembourg |
| Greek | EU Official | Cyprus, Greece |
| Hungarian | EU Official | Hungary |
| Irish | EU Official | Ireland |
| Italian | EU Official | Italy |
| Latvian | EU Official | Latvia |
| Lithuanian | EU Official | Lithuania |
| Luxembourgish | National Official | Luxembourg |
| Maltese | EU Official | Malta |
| Polish | EU Official | Poland |
| Portuguese | EU Official | Portugal |
| Romanian | EU Official | Romania |
| Slovak | EU Official | Slovakia |
| Slovenian | EU Official | Slovenia |
| Spanish | EU Official | Spain |
| Swedish | EU Official | Finland, Sweden |
| Turkish | National Official | Cyprus |
- Unique Languages Listed: 30
- EU Institutional Languages: 24 (used for all official EU business and legislation).
- National/Regional Only: 6 (Basque, Catalan, Frisian, Galician, Luxembourgish, Turkish). These are official within their specific borders but are not official working languages of the European Parliament or Commission.