Corporate governance, as a mechanism that protects corporate shareholders, is experiencing constant changes in the turbulent and rapidly changing corporate world of the 21st century. Corporate governance develops in parallel with contemporary corporations and brings together companies, investors, regulators and other stakeholders. One of the most important internal corporate governance mechanisms is the audit committee as an essential component that functions within the enterprise and are a kind of guardian of the interests of all parties involved. Although they have only started to develop more intensively in the last twenty years, their role in the modern corporation has become irreplaceable after scandals such as Enron, WorldCom and others, as the consequences of the collapse of such large players in the economy have had a profound effect on national economies. The aforementioned corporate fraud constitutes a milestone that has prompted regulators to make significant changes within the roles and responsibilities of audit committees as a mechanism that should be able to signal the existence of potentially dangerous decisions by management. The aim of this paper is to investigate the practice of audit committees in Croatia and selected countries and to make comparisons in order to find best practices or potential suggestions for improvement. The purpose of the paper is to outline and summarize the key responsibilities of audit committees in Croatia and selected countries, and to examine whether there are significant differences between the countries observed. The study of the domestic and foreign literature presented the key differences and concluded that the practice of audit committees in Croatian conditions exists, but it is still modest and uniform