The aim of this graduate thesis was to investigate whether the problem of cyberbullying in an elementary school exists and to what extent. Cyberbullying is one of the forms of bullying that happens through the internet and children who are still not sufficiently aware and careful using various communication services are most likely to be a part of it. The paper consists of a theoretical review of the concepts of bullying and cyberbullying, their types, the characteristics of bullies and victims, an overview of legal frameworks dealing with bullying and cyberbullying, as well as a comparison of bullying and cyberbullying. After mentioning the characteristics of bullying and cyberbullying, recommendations for prevention and detection of cyberbullying for parents and teachers are listed. The second part of the paper presents the results of the survey in the form of a questionnaire conducted in the period from 29 April to 10 May 2019 in the fifth, sixth and seventh grade of the Podturen Elementary School, located in a small place in Međimurje County. Research results show that children who were less familiar with the concept of cyberbullying were more likely to be part of the same.