Abstract: Parental monitoring is a culturally sensitive concept which is shown to affect the wellbeing of adolescents. Adolescents of school going age need to be monitored to prevent them experiencing risk behaviors as they are spending much time outside houses, not in the presence of their parents and with friends or strangers. Since there was no tool to assess the perception of parental monitoring among school going adolescents (14 -16 years), the objective of the study was to adapt, translate and validate an instrument (PMS – Adolescent - Sinhala version) to assess parental monitoring as perceived by the school going adolescents (14-16 years) in Sri Lanka.