Unionsborgerskab - institutionaliseret og oprettet ved Maastricht-traktaten og senere modificeret ved Amsterdam-traktaten - giver en række rettigheder og pligter til borgere fra alle medlemsstater.
Citizenship of the Union - institutionalised and created as such by the Treaty of Maastricht and later modified by the Treaty of Amsterdam - confers a series of rights and duties on the nationals of all the Member States.