The aim of the study is to explain the university students' cyber bullying and cyber victimization level according to the social adjustment and certain demographic variables. The research is descriptive study. In the study, social adjustment and sub-dimensions were discussed as an independent variable and cyberbullying and cyber victimization as dependent variables. The study group consists of 476 university students who enrolled in Yildiz Technical University Faculty of Education, Faculty of Electrical and Electronics Engineering and Faculty of Arts and Design and selected by cluster sampling method. "The Social Adjustment Sub-Scale in Hacettepe Personality Inventory", "Cyber Bullying and Cyber Victimization Scale" and "Demographic Information Form" were employed to obtain study data. Analysis of Mann Whitney U and Kruskal-Wallis were used in analyzing the data. According to the results of the study, it was observed that based on social adjustment, cyber bullying and cyber victimization scores of university students are significantly different. As the level of social adjustment increases, it can be said that cyberbullying and cyber victimization levels decrease. In addition, while cyberbullying and cyber victimization levels did not differ significantly according to socioeconomic status, parental education status and parental status (married or divorced), it was determined that there is a significant difference according to gender, impersonation, parental attitude and enrolled the faculty.