SUMMARY This paper investigates the key aspects of socially responsible business in the banking sector of the Republic of Croatia, focusing on the comprehensive picture of CSR in that sector. CSR is an indispensable part of modern business, emphasizing the responsibility of companies towards society, the environment and the economy. It is clear that the banking sector has a significant impact on society and the economy, thus acquiring a special responsibility in promoting social responsibility. Through an analysis of the integrity, value and mission of banks, the paper draws a conclusion about their contribution to social and environmental prosperity. It also examines how banks implement initiatives and activities that support CSR, including environmental sustainability, financing socially responsible projects, ethical banking, customer education and cooperation with social partners. Examples of three leading banks in Croatia are presented: Zagrebačka banka d.d., Privredna banka Zagreb d.d. and Erste&Steiermärkische Bank d.d. Through the analysis of their practices and transparency in relation to CSR, the paper highlights the differences and similarities in their approaches. This paper therefore offers a deeper understanding of CSR in the banking sector of the Republic of Croatia. It shows how banks promote CSR through their values and activities, and emphasizes the importance of transparency in their practices.