The financial system is one of the fundamental components of a country's economic system, so the financial system should enable the growth and development of the economy, and it performs its functions through financial markets and institutions. Modern financial systems appear in two forms, namely the bank-centric and market-oriented financial system. The financial system of the Republic of Croatia, like most European countries, is extremely bank-centric. In such a system banks dominate as the main financial institutions, and the importance of the capital market is small. In the Republic of Croatia, five main dominant banks stand out, namely: Zagrebačka banka, Raiffeisen banka, Erste banka, Privredna banka Zagreb and OTP banka. These banks make up a high degree of concentration in the overall banking system in the Republic of Croatia, together they make up over 80% of the total assets of the banking system of the Republic of Croatia. The paper will provide an insight into the operations of large, foreign - owned banks in the Republic of Croatia. Also, the efficiency of operations of these banks will be analyzed and compared with the help of accounting indicators for the period from 2012 to 2019. The aim of this paper is to compare the operations of these foreign-owned banks on the basis of financial statements and accounting indicators. Based on the obtained results, come to the conclusion how these banks operate in the Republic of Croatia and also explain why there are oscillations between these banks in the indicators.