The EU regional policy is a policy aimed at reducing economic and social disparities between different regions of the member states by boosting their development. The broadest meaning of the regional policy is Cohesion policy, encompassing a number of measures for achieving the goal of social and economic cohesion. Nowadays, regional policy is an integral and significant part of the development policy of the European Union, and consequently, and upon accession of the Republic of Croatia to the EU, also part of the development policy of the Republic of Croatia. In the Republic of Croatia, regional policy and policy of the regional development are two separate policies. Although their legislative and strategic frameworks are different, they are intertwined due to the fact that they both use the structural elements of the European Union as sources of funding and are geared towards the same goals, which is to reduce regional disparities and inequalities in development. The intention of this thesis is to demonstrate the importance of the EU regional policy and its implementation for the Republic of Croatia. The aim of this study is, through the analysis of the regional policy of the European Union, to measure the success of its implementation in the Republic of Croatia. By conducting research and through detailed analysis a specific correlation has been determined between implementation of regional policy and its impact on certain macroeconomic indicators. In addition, it has been identified which specific goals the Republic of Croatia has fulfilled from the document Europe 2020 Strategy and the extent to which it has contributed to the implementation of the above mentioned Strategy.