The present study examined the psychometric properties of the Interpersonal Emotion Regulation Questionnaire (IERQ) in a Colombian sample of 726 participants. A linguistic adaptation was conducted and Evidence for internal structure, relationships with other relevant variables, and construct discrimination was gathered. The Colombian version of the IERQ demonstrated excellent to good inter-rater agreement, supporting content validity. Confirmatory factor analysis revealed excellent fit indices for a four-factor model, consistent with previous research. The four-factor model demonstrated invariance across gender, parenthood status, and mental health diagnosis. Discriminant validity was supported by significant differences between the IERQ dimensions and intrapersonal emotion regulation strategies. The instrument exhibited excellent internal consistency. Correlations with cognitive reappraisal, suppression, reward probability, and life satisfaction ranged from negligible to moderate. However, no significant correlations were found with emotional symptoms. The Interpersonal Emotion Regulation Inventory (IERQ) has proven to be a robust psychometric instrument for assessing interpersonal emotion regulation in the Colombian population.