EU Citizenship, which is considered as significant tool for intra-EU immigrant integration, poses a challenge for integration of third country nationals. Non the less there are concepts based on European citizenship which aim to strengthen non-EU foreigners’ integration, e.g. concept of civic cithizenship defined by the European Commission as ‘granting third country nationals rights and obligations comparable to those of EU citizens’, as well as proposals to uncouple European citizenship from Member State nationality and develop a ‘true Union citizenship’. The aim of the article is to analyze EU citizenship as an instrument of immigrant integration policy and present the integration ideas based on EU citizenship. The research includes diagnosis of ‘exclusiveness’ of EU citizenship as well as potential of this legal construct for immigrant’s social and political ‘inclusion’, strengthening integration process and establishing an area of freedom, security and justice.