This thesis analyzes the role of International Financial Reporting Standards (IFRS) in enhancing financial reporting transparency. IFRS represents a globally accepted framework that ensures consistency, comparability, and transparency of corporate financial reports, thereby facilitating decision-making for all users of financial information, such as investors, creditors, and regulatory bodies. The theoretical part of the thesis covers key aspects of IFRS, including its history, development, and role in standardizing financial reporting on an international level. The importance of IFRS in creating clearer and more reliable financial information, reducing the risk of information asymmetry, and increasing trust in financial reports is also analyzed. The practical part of the thesis focuses on comparing the financial reporting of IFRS obligors in Croatia and Slovenia. Examples of financial reports in both countries are analyzed in detail, with particular emphasis on transparency and the practical application of IFRS. The comparison shows that the application of IFRS in both countries improves the clarity and comparability of financial data, although there are certain differences in the level of detail and adjustments to national accounting regulations. In conclusion, the thesis confirms that the application of IFRS significantly contributes to increasing the transparency of financial reporting, which is crucial for the stability and development of global financial markets.