Public procurement is a term that refers to the procurement of goods and services by state bodies, local government units, and public institutions. Larger countries have legal regulations governing the right to public procurement in order to reduce the possibility of corruption. Public legal bodies oversee the procurement process, as well as the expenditure of public funds. The public procurement process itself must be conducted in accordance with EU principles, while public procurement procedures must be in accordance with the Public Procurement Act. Transparency in public procurement has increased with the introduction of e-procurement, in other words, with the formation of an electronic approach to public procurement. The paper outlines the importance of the public procurement procedure for the successful application and implementation of the EU project. The first part of the paper deals with the basic concepts and legislative framework of the public procurement system in the Republic of Croatia. The second part presents a brief overview of EU funds. The third part deals with the entire public procurement procedure, co-financed by EU funds. In the fourth part of the paper, the institute of administrative control of public procurement procedures is presented.