--- - |2 Peer victimization is a chronic stressor that occurs within the context of peer interactions and has been robustly associated with numerous negative psychological and social adjustment problems. Although increased frequency of peer victimization has been linked to psychosocial problems, few researchers have studied the role of duration and pervasiveness of victimization (i.e., number of places it occurs). The objective of this study was to examine how frequency, duration, and pervasiveness of peer victimization are associated with youth adjustment. Canadian adolescents (N = 879), ages 12–18 completed an online survey about experiences with peer victimization. Youth also answered questions about internalizing problems, distress, relationship quality with family, friends, and adults in their school and community, as well as academic functioning. Data were analyzed using multinomial logistic regression modeling. Both duration and pervasiveness of peer victimization were predictive of increased internalizing problems, distress, relationship problems, and academic difficulties. Duration and pervasiveness of peer victimization were identified as important factors to consider when predicting youth psychosocial adjustment. By asking questions about these situational factors, parents, teachers, and healthcare providers may more effectively identify youth who are at risk for experiencing mental health problems associated with peer victimization. - Scandinavian Journal of Psychology, EarlyView.