Objective: The aim of this study is to evaluate the state of cyberbullying they performed and were exposed to and the state of loneliness. Methods: This cross-sectional study carried out in Cumhuriyet University. Total number of the students in Cumhuriyet University were 34,212 and 2.244 of them composed the sampling of the study. In collecting data, personal information form including the socio-demographic characteristics and the state of cyberbully – victim and UCLA Loneliness Scale were used. Results: This study showed that 22% of the respondents were cyberbullied while 64% were victims of cyberbullying. Students exposed to cyberbullying reported that they were affected by this situation in various ways. There was a negative significant correlation between the cyber bullying and loneliness scores (r= -0.19, p=0.00) while there was a negative insignificant correlation between cyber victimization and loneliness scores (r= -0.01, p=0.72). Students access the Internet at a higher rate increased frequency of cyber bullying are applied and they are exposed to increased loneliness scores were determined. Students cyber bullying was determined that as they make themselves feel less alone. Conclusion: The findings of the study showed that cyber victims and loneliness were prevalent among university students. Also, students who were cyber bullied expressed more loneliness. It is suggested that for the control over the cyber environment, students must be provided by training and guidance services, and that must be increased by making legal regulations