The goal of this dissertation is to investigate the impact of the level of development of business intelligence on the level of maturity of the knowledge management system in public administration in Bosnia and Herzegovina. Theoretical part of dissertation is composed of the findings from the field of the doctoral dissertation, overview of previous research and comparative analogy with empirical features of public administration of neighbouring countries in order to find out the most suitable model of electronic government in Bosnia and Herzegovina. Following terms were conceptualized: business intelligence, knowledge management, competitiveness and electronic government. Mutual dependence among these terms in the light of using information-communication technologies as one of the sources for competitive advantages of countries was determined. Operating and measuring information and communication technologies in terms of electronic government development stage were systematically presented, and then the influential factors were listed; aggregate measurable indicators, essential for the competitiveness of countries, were defined; the impact of public administration institutional capacity on the country's competitiveness, as well as its role in supporting scientific and technological development as basis for long-term economic growth and competitiveness was determined. Similarities and differences between terms business intelligence and knowledge management, along with analysing their historical context, evolution and development tendencies and, ultimately, their convergence, were determined. Empirical part of dissertation is devoted to measuring the impact of business intelligence functions development on the maturity of individual knowledge management system elements, divided into sections by areas of influence. Research was conducted on primary survey data using inferential statistical methods. Results of conducted research have partially confirmed the doctoral dissertation hypothesis on the impact of the level of development of business intelligence on the level of maturity of the knowledge management system in the areas of strategy and objectives, infrastructure and sources of knowledge, respectively.