Objective: The present study aimed to examine the relationship between different forms of maltreatment and cognitive emotion regulation strategies. Methods:This research is a cross-sectional study. The sample included 321 individuals from the general population aged 18-50 years. They were selected from different districts of Tehran, using the convenience sampling method. The data were collected by the traumatic experiences checklist and the cognitive emotion regulation questionnaire and analyzed using the Pearson correlation coefficient and multivariate regression analysis and the enter method.Results: Emotional maltreatment explained part of the variance of self-blame, rumination, catastrophizing, and blaming others (P<0.01). Physical maltreatment explained part of the variance of catastrophizing and blaming others (P<0.01), and sexual maltreatment had a significant positive correlation only with catastrophizing (P<0.05). Conclusion:The results indicated a positive association between a history of maltreatment and the use of maladaptive emotion regulation strategies. Besides, it was found that various forms of maltreatment have different relationships with maladaptive cognitive emotion regulation strategies.