This study examined whether internet addiction and dysfunctional anger expression mediate the relationship between Depression and Victimization and Bullying in Elementary students. For this study, Data collected on 651 students in 4th, 5th and 6th grade from 20 elementary schools in B area were used in the analysis. Correlation analysis was conducted to find out the relationship between depression, internet addiction, dysfunctional anger expression, victimization and bullying. To find out if Internet addiction and dysfunctional anger expression are mediated by the relationship between child s depression and victimization/bullying experience, the model was tested using a structural equation. The results were as follows. First, Depression has been confirmed to have a direct effect on the Victimization. Second, depression has been shown to affect the bullying by mediating Internet addiction. Third, depression has been shown to affect both victimization/bullying by mediating the dysfunctional anger expression. Fourth, the dual mediating effects of Internet addiction and dysfunctional anger expression were significant in relation to the relationship between depression and victimization/bullying. Finally, limitations and implications of this study were discussed.