Football is a sport that affects different segments of people's lives and the whole of society and as such arouses interest in foreign and our scientists, among which there are visible similarities in terms of interpretation of this social phenomenon. Thus, the aim of this final work is to give an insight into the concept of fan violence in and out of football stadiums, i.e. in places that have no direct connection to football. In the introductory chapter, we will present key research findings and introduce in the analysis of fan violence. The next chapter will provide an overview of previous domestic research, which is mostly inspired by subcultural theories. Furthermore, chapter three consists of a section explaining the domestic legal framework and structure of offences, offences and penalties for unlawful conduct over a period of time from the application of the Law on The Prevention of Disorder in Sports Competitions to this day. The results of analyzes and research show that fan violence in football was highly prevalent in Croatia during this period. Furthermore, chapter four will consider the possibilities of preventive action in Croatia within the legal frameworks and various preventive programmes and activities. Finally, in the last fifth chapter we will analyze the role and position of social work within the prevention frameworks and what are the possibilities for the development of this profession within the context of preventing illegal behaviour of fans in Croatia.