The aim of the final thesis was to link the social networks to the right to freedom of expression. The research provides the insight into the regulation of freedom of expression in the Republic of Croatia and its importance in the Croatian democracy. Another emphasis is put on the impact of social networks on freedom of expression and on open issues that are related to freedom of expression in digital environment. In a word, if the right to freedom of expression is defined as the freedom to spread and receive information and ideas, and later on as the change in someone’s attitude and belief without the interference of public authority, then it can be completely realized in the context of social networks in the post- industrial society. Another purpose of the study was to examine the student population about their perception of freedom of expression on the social networks in the Republic of Croatia. The study was conducted using a quantitative method, more precisely the survey questionnaire in the period from the 3rd to 4th December 2018. In the target population there were 230 respondents. Research findings have shown that respondents are inclined to restrict the freedom of expression on social networks for the purpose of safety and respect towards the others as hate speech does not belong to social networks, but still the certain forms of expression that are controversial and provocative, entangled with black humor and satire, and social and political commentaries should not be limited. However, much more detailed study on a representative and larger sample need to be conducted in order to determine the accurate perception of target population.