Corporate governance is a key element of any economic structure, and this thesis presents the legislative framework of corporate governance in the Republic of Croatia and how these frameworks affect the economy, societies, investors and the securities market. Corporate governance is defined as a complex system of relationships between management, shareholders of various sizes, and other interest groups within corporations. It plays a key role in sustainable economic growth, increasing the efficiency of the economic system and enables easier access to external sources of capital, which makes it an extremely important aspect of modern business. The legislative framework of corporate governance in the Republic of Croatia includes a number of laws and regulations that regulate various aspects of this system. This paper examines the most important laws affecting corporate governance in Croatia, including the Capital Markets Act and, and Law on Trading Companies Analyzes, their impact on corporations and shareholders. Also, the OECD Corporate Governance Code, which provides guidelines for good corporate governance, and the Corporate Governance Code adopted by the Croatian Financial Services Supervisory Agency and the Zagreb Stock Exchange are presented. These codes promote responsible management and supervision of the business and management functions of joint-stock companies, thus protecting the interests of investors and shareholders. The importance of corporate governance legislative frameworks cannot be overemphasized, as they create a legal and regulatory infrastructure that protects all capital market stakeholders and promotes transparency, integrity and accountability. The paper also deals with the influence of the securities market on corporate governance, investigating how the market affects stock prices, shareholder rights and market liquidity. Understanding these frameworks is essential for maintaining a balance between the economic and social goals of corporations and for ensuring sustainable and responsible operations in the modern business environment.