The research investigates how European Union funds contribute to reducing regional disparities in the Republic of Croatia, focusing on the period from 2014 to 2022. The main goal of the research is to analyze the impact of EU funds on economic development and the reduction of disparities among counties, with a particular emphasis on EU cohesion policy. The research is based on one main hypothesis and two auxiliary hypotheses. The main hypothesis assumes a positive impact of EU funds on reducing regional disparities. The first auxiliary hypothesis states that in the observed period from 2014 to 2016 and from 2020 to 2022, regional disparities measured by the ratio of GDP per capita of the most developed region, specifically the City of Zagreb, and other counties have decreased. The second auxiliary hypothesis states that in the same periods, regional disparities measured by the Gini coefficient have decreased. The research uses data on the shares of EU funds in county budgets and the development index for the periods 2014-2016 and 2020-2022. Correlation analysis conducted as part of the research shows that EU funds did not have a positive impact on regional development, but an analysis of budgets concluded that some counties show an increased development index. The conclusions of the paper emphasize that despite the benefits of EU funds, regional disparities within Croatia remain significant. Comprehensive strategies are needed that take into account various factors affecting regional development, including emigration, corruption, and distance from the capital. The research contributes to understanding the impact of EU funds and cohesion policy on regional inequalities and provides a foundation for further research and policy-making.