Background: The present study aimed to investigate maladjustment based on identity status among students of the University of Tehran. Methods: In a descriptive-correlation and retrospective study, 107 male college students at the University of Tehran were selected by convenience sampling method. The extended objective measure of ego identity status and MMPI-2 college Maladjustment (Mt) scale were used for data collection. The obtained data were processed by using ANOVA with SPSS V. 22. Results: Findings indicated significant differences among achieved, moratorium, foreclosed, and diffused identity statuses (P<0.05). Also, there is a significant difference between diffused and achieved identity statuses. Individuals with diffused identity status have a higher level of maladjustment than individuals of other identity statuses. Conclusion: According to the findings of the present study, individuals without identity exploration and commitment are more vulnerable to maladjustment behaviors. So these students need psychological intervention.