This final paper investigates the topic of systemic risks and systemically important credit institutions in the Republic of Croatia with the aim of a deeper understanding of their importance for the country's financial system. Financial stability is a key element for maintaining the stability of the economy, and systemic risks represent potential threats to that goal. In this context, the paper analyzes how systemic risks are identified and measured, and how systemically significant institutions are regulated and monitored. The first part of the paper describes the financial system and the financial market, and defines systemic risks and explains their impact on the financial system. Emphasis is placed on the role of regulators and supervisory bodies in identifying and managing these risks. Furthermore, this part of the paper investigates the challenges that Croatia and the world faced during the financial crises, with special reference to the global financial crisis of 2008 and the COVID-19 crisis, as well as the inflation that followed it, and which the world is still facing today. Fight. The second part of the paper shifts the focus to systemically important institutions in Croatia. It investigates how the Croatian National Bank determines and supervises other systemically important credit institutions, and what criteria it uses for this purpose. It determines the impact of the aforementioned crises on other systemically important credit institutions, and analyzes the approach and methods in risk management that other systemically important credit institutions must apply in order to preserve the stability of the financial system. Finally, the paper studies the connection between the systemic significance of certain other systemically important banks and their influence on the financial system of the state and its economy. Through a comprehensive analysis, this work provides a deeper understanding of the importance and complexity of studying systemic risks and highlights the importance of monitoring the operations of systemically important credit institutions, which is key to preserving the stability of the financial system of the Republic of Croatia.