| Abbreviation | Definition |
|---|---|
| ETUC | English Trade Union Congress |
| ETUC | English Trades Union Congress |
| ETUC | European Trade Union Confederation |
| ETUCO | European Trade Union College |
| ETUF | Egyptian Trade Union Federation |
| ETUI | European Trade Union Institute |
| EU | Ecological Union |
| EU | Economic Union |
| EU | Energy Union |
| EU | European Union |
| EUA | European Union Alliance |
| EUAC | European Union of Aquarium Curators |
| EUAM | European Union Advisory Mission |
| EUAR | European Union Agency for Railways |
| EUB | European Union Bank |
| EUBO | European Union Baroque Orchestra |
| EUCA | European Union Control Association |
| EUCC | European Union Chamber of Commerce |
| EUCC | European Union Counties Challenge |
| EUCD | European Union Copyright Directive |