The topic of this paper is introduction of the euro sa the official currency in the Republic of Croatia. Namely, by joining The European Union, Croatia also assumed the obligation to introduce the euro as its own currency. The relevance of this topic, both the Croatian economy and the general public is evidenced by the numerous discussions and the involvement of Croatian economists on this topic. Although the vast majority of economists point out the positive side of the introduction of the euro, there is another side that opposes its introduction and is committed to retaining its own currency (the Croatian kuna) and the ability to independently manage monetary policy. Croatia´s accession to the monetary union would completely lose its sovereignty regarding the management of monetary policy and commit Croatia to the implementation of the monetary policy created by the European Central Bank. The aim of this paper is to briefly discuss the emergence of the first Croatian official currency of the Croatian Kuna and the Croatian Dinar as a transitional payment method until the introduction of the Kuna, to present the sequence of development of European integrations as well as the European economic institutions leading to the realization of economic and monetary union. Croatia needs to meet the requirements to introduce the euro as its own currency and to highlight some of the benefits and disadvantages of introducing euro.