Cyberbullying is an expected behavior among adolescents and threatens their psychosocial health. The current cross-sectional study aims to determine the mediating role of the need to belong in the relationship between vulnerable narcissism and cyberbullying in adolescents. Study data were collected from 501 adolescents. The data were evaluated using descriptive statistics, Pearson correlation coefficient, and mediation analysis using the PROCESS Macro Model 4. The study suggests that vulnerable narcissism in adolescents predicts cyberbullying directly and indirectly through the need to belong. Interventions are recommended to ensure that the belonging needs of adolescents at risk are met in appropriate ways.