This study examines the relationship between cyberbullying and religious identity among the students of Ferdowsi University of Mashhad, employing the descriptive methodology of correlation type. The statistical population consists of 580 students at bachelor’s and master’s levels, as well as those studying Ph.D. The data is collected by Stratified Random Sampling. Stark and Glock’s religiosity scale and a researcher-made questionnaire about cyberbullying were prepared. The face and content validity of the questioners was confirmed by the experts of this field; moreover, their reliability with Cronbach’s alpha coefficient (83 %) was estimated to be at a good level. Data analysis is performed using SPSS 24, and descriptive statistics were used for determining frequency, percentage, average, and standard deviation. Also, due to the asymmetrical data distribution, Spearman’s correlation coefficient was used. According to the results of Spearman’s correlation, there is a weak negative correlation between students’ religiosity and cyberbullying crime (rs = -0.2), and this value is significant at the statistical level 0.01. Therefore, with an increase in the religiosity variable, sexual and non-sexual cyberbullying decreases very slightly.