The present study was conducted to investigate the effectiveness of psychological capital training on academic motivation, academic engagement and social competence of victim of bullying students in the first year of high school. The current study was a semi-experimental application with a pre-test-post-test design with a control group and a two-month follow-up period. The statistical population of the present study was formed by students who were victims of bullying in the first year of high school in Bandar Lange city in 2022-2023. In this research, 36 victim of bullying students were selected by purposeful sampling and randomly assigned to experimental and control groups (18 students in the experimental group and 18 students in the control group). The students in the experimental group received the psychological capital training during ten weeks in ten 90-minute sessions. Bullying Victim Questionnaire (BVQ), Academic Motivation Scale (AMS), Academic Engagement Questionnaire (AEQ) and Social Competence Questionnaire (SCQ) were used in the present study. The data were analyzed through mixed ANOVA via SPSS23 software. The results showed that psychological capital training has significant effect on the academic motivation (p<0.001, Eta=0.64, F=60.23), academic engagement (p<0.001, Eta= 0.62, F=57.36) social competence (p<0.001, Eta= 0.60, F=52.78) in the victim of bullying students. According to According to this psychological capital training training can be used as an efficient method to increase academic motivation, academic engagement and social competence of victim of bullying students through hope, optimism, self-efficacy and mental and cognitive resilience.