The paper "Public Administration: Impact on GDP according to DESI Analysis" explores the correlation between the digitization of public administration and economic development, comparing selected countries with a particular focus on the Republic of Croatia. Within the theoretical framework of public administration development, the research analyzes strategies that emerged during the enactment of relevant regulations for the development of epublic administration. It also examines the outcomes of projects aimed at digital services in the Republic of Croatia for individuals and legal entities. The key tool used in the study is the Digital Economy and Society Index (DESI), which measures the digital readiness of countries. Using the DESI index, the results of the Republic of Croatia are analyzed in dimensions such as Human Capital, Connectivity, Integration of Digital Technologies, and Digital Public Services. Through a simple linear regression method, the research explores the correlation between GDP and the DESI index, both in comparison with the European Union average and specifically for the Republic of Croatia. The paper draws conclusions about the significance of the digital transformation of public administration and its impact on economic development, analyzing the challenges that public administration faces in this process. Suggestions for further research emphasize the need for a deeper understanding of the relationship between digitization and economic development.