Introduction: The present study aimed at determining the reliability and validity of the Persian translation of Parental Reflective Functioning Questionnaire (PRFQ; Luyten, Mayes, Nijssens, & Fonagy, 2017). Method: Therefore, the Persian version of the scale prepared by translation and back translation the original questionnaire, and after a pilot study, was completed by 308 parents (233 female and 75 male) who had children under three-years-old in Tehran, accompanied with General Health Questionnaire (GHQ-28; Goldberg, 1972) and Difficulties in Emotion Regulation Scale (DERS; Gratz and Roemer, 2004). Results: Cronbach's alpha for three subscales, “ pre-mentalizing mode” , “ certainty about mental states” and “ interest & curiosity in mental states” were 0/90, 0/89 and 0/79 prospectively. Three subscales achieved in construct validity that was equal to the original version. All subscales of DERS had significantly negative correlation with “ interest & curiosity in mental states” and most of subscales had significantly positive correlation with “ pre-mentalizing mode” , “ certainty about mental states” which confirms the convergent and divergent validity of PRFQ. Conclusion: The findings suggest that the Persian version of this scale has good validity and reliability and can efficiently use in studies with Iranian sample.