This study investigates the mediatory role of exercise self-regulation role in the relationship between personality traits and anger management among athletes. The statistical population of this study includes all athlete students of Shar-e Ghods College, among which 260 people were selected as sample using random sampling method. In addition, the analysis was done using structural equation modeling and path analysis through SPSS and Amous software. The results indicated that in investigating the effect of personality traits on anger management, neuroticism impacts on anger management positively and agreeableness and conscientiousness impact on anger management negatively. In response to the second question, it was concluded that exercise self-regulation impacts on anger management positively, so that with one increase in the standard deviation of exercise self-regulation scores, 0.224 standard deviation is added to anger management. Therefore, in response to the third research question, it was concluded that exercise self-regulation mediates the effect of agreeableness and conscientiousness on anger management significantly.