Background/Aims: Bladder and bowel dysfunctions are both prevalent health problems in pediatric population. The Childhood Bladder and Bowel Dysfunction Questionnaire (CBBDQ) is a parent-reported tool to evaluate and quantitatively assess bladder and bowel dysfunction symptoms in pediatric patients. This study aimed to translate the CBBDQ into Turkish language and culturally adapt it for use among 5-12-year-old children. Moreover, this study was also aimed to determine the reliability and the construct validity of the Turkish version. The main hypothesis of our study was that the CBBDQ would be translated into Turkish and culturally adapted so that Turkish parents could understand it. Additionally, we estimated that the Turkish version would have eventual internal consistency and test-reest reliability and admissible construct validity.