With the entry of the Republic of Croatia into the Eurozone on January 1, 2023, the final and crucial phase of the Economic and Monetary Union (EMU) began. This paper analyzes the effects of the introduction of the euro on international investments in Croatia. The research aims to determine how the adoption of the euro has impacted the inflow of foreign investments, as well as to identify key changes and trends in international investments before and after the adoption of the common European currency. The methodology used includes the analysis of available statistical data, comparison of historical trends, and review of relevant literature. The precise impact of the euro's introduction on international investments in Croatia cannot be determined at this time; however, it is expected that the main effects on international investments will be positive, as has been the case in other member countries, primarily through the reduction of currency risk, lower transaction costs, and improved macroeconomic stability. The paper also points to the key identification of areas where the investment climate can still be improved and provides recommendations for future economic policies that could further stimulate foreign investments.