Özet:

The principle of ne bis in idem which has gained recognition in the legislations and practices of many States as one of the fundamental human rights means that a confl ict which constitutes the subject of a trial cannot be brought before and another sentence cannot be imposed if it has been fi nalized as a result of criminal proceedings. This principle which was used to dealt in the domestic law of the States has acquired a cross-border dimension in the last century thanks to the concluded international agreements and the structures established such as European Union.In European Union which is accepted as one of the best examples of supranational structures, the interpretation of the Court of Justice of European Union is of signifi cant importance with regard to how a judgment rendered in a Member State as a result of investigation or prosecution should be taken into account in a prosecution carried out in another Member State concerning the principle of ne bis in idem. Because of Turkey’s position as a candidate for full membership, this study has been prepared in order to draw attention to the judgments of the Court on this issue.

Anahtar Kelimeler: