According to Article 55 of the Treaty of the European Union, the following are the official European Union languages: Bulgarian, Croatian, Czech, Danish, Dutch, English, Estonian, Finnish, French, German, Greek, Hungarian, Irish, Italian, Latvian, Lithuanian, Maltese, Polish, Portuguese, Romanian, Slovak, Slovenian, Spanish and Swedish. English continues to be counted as an official EU language despite Brexit. This is because English has been enshrined in EU legal documents as one of the official and working languages of the EU institutions, and because it is also one of the official languages of Ireland and Malta.

Article about third EU language requirement for staff of EU institutions.