This study evaluated the psychometric properties of the Persian version of the Obsessive–Compulsive Inventory–Child Version (OCI-CV) in clinical and community samples. Factor structure (confirmatory factor analysis), validity (convergent/discriminant, and predictive), and reliability (internal consistency, and 4-week retest) of the Persian version of the OCI-CV were investigated in a sample of 391 children and adolescents 7–17 years comprised of two groups: a clinical sample of youth with OCD (n = 62), and a community sample (n = 329). Participants completed the OCI-CV, Multidimensional Anxiety Scale for Children (MASC), Children’s Depression Inventory (CDI), and Child Behavior Checklist (CBCL). Similar to the English version of the OCI-CV, the Persian version of the scale demonstrated a stable six-factor structure, good convergent and discriminant validity through its correlations with other specific measures of pediatric psychopathology, acceptable sensitivity and specificity for the detection of OCD, and good reliability in terms of internal consistency and temporal stability. These findings suggest that the OCI-CV is a valid and reliable measure to assess obsessive–compulsive symptom dimensions in Iranian youth. Findings provide cross cultural support on the utility of OCI-CV as a self-report measure of obsessive–compulsive symptomology.