This paper analyzes the reform of Croatian public administration in accordance with European standards in order to increase efficiency, transparency, and accountability. Public administration reform represents one of the most important challenges facing modern states, especially in the context of European integration. The reform of Croatian public administration is necessary to align the country with public administration in the European Union, as well as its standards and practices. The EU accession process brought numerous challenges, but also opportunities for the modernization of public administration. Therefore, the paper defines different concepts of public administration and analyzes the European principles of public administration. Key reform measures are analyzed, including decentralization, professionalization of civil servants, e-administration, transparency measures, and the fight against corruption. The analysis is based on relevant legislation and strategic documents. In addition, some reforms carried out by individual European Union member states are presented with the aim of identifying best practices, recognizing that this could be a path for new reforms. Despite the achievements so far in the reform of public administration, some challenges have been observed, such as resistance to change, lack of capacity and resources, and political influence.