Introduction and Aim: Enuresis is a urine voiding impairment and it means repeated involuntary urine voiding. While enuresis more commonly occurs in children, it can also occur in adults. According to DSM IV, enuresis is repeated involuntary voiding of urine into bed or clothes. Involuntary voiding of urine which has the frequency of at least twice a week for at least 3 consecutive months is a significant symptom. This study aims to determine the enuresis prevalence and the factors affecting enuresis among the students of regional primary boarding schools in Sinop.