The Official EU languages 

The 20 official languages of the EU and their abbreviations are as follows: 

Español  ES Spanish
Dansk  DA  Danish
Deutsch  DE  German
Elinika EL  Greek
English  EN
Français  FR French
Italiano IT  Italian
Nederlands NL Dutch
Português  PT Portuguese
Suomi FI Finnish
Svenska SV Swedish
Čeština CS Czech
Eesti ET Estonian
Latviesu valoda LV Latvian
Lietuviu kalba LT Lithuanian
Magyar HU Hungarian
Malti MT Maltese
Polski PL Polish
Slovenčina SK Slovak
Slovenščina SL Slovene


[source: http://europa.eu.int/comm/education/policies/lang/languages/index_en.html#Official%20eu]