One of the three priorities of the Global Education First Initiative launched in 2012 by the United Nations is fostering global citizenship. However, this concept remains vague if left unchallenged, and as a result is difficult to implement in the field of education. It may be true that the growing globalisation and multiculturalism of contemporary societies is gradually transforming the concept and traditional role of citizenship, the legal reality of citizenship and its practises, but they still remain largely rooted in the idea of Nation-State. This article attempts to clarify the concept of global citizenship, its possible application in the field of citizenship education and its potential contribution to the enrichment of multicultural education.