In the context of the accelerated transition to sustainable development and the growing interest in responsible investment, the quality of corporate governance of companies is becoming increasingly important. This study is devoted to the analysis of the impact of corporate governance systems on the access of organizations to "green" financing. The paper examines key elements of corporate governance — transparency, accountability, efficiency of the board of directors, integration of ESG practices - and their role in building trust among investors focused on environmental and social goals. However, despite the active development of the sustainable finance market and the growing number of companies declaring their commitment to ESG principles, the problem of the discrepancy between formal compliance with standards and the real expectations of investors remains unresolved. Many companies with similar environmental initiatives demonstrate varying ability to attract green financing. This indicates that not only the content of projects plays a key role, but also the quality of corporate governance, which determines the level of trust and willingness of investors to finance. Special attention is paid to the analysis of the requirements of institutional and private investors for companies applying for "green" investments and the issuance of sustainable financial instruments. Based on a comparative analysis of international standards and practices, it is concluded that a high level of corporate governance is an important factor that increases the likelihood of attracting "green" capital and reduces risks for investors.