Adolescent mental health issues can have a significant impact on both the individual and their family. Understanding what factors relate to offspring mental health can help identify adolescents at greater risk of mental health issues. Previous research has investigated the role of parental religious belief, with inconsistent results. The aim of the present study was to re-examine whether a parent’s religious belief is related to their offspring’s mental health during adolescence. This is intended to build upon our previous study that looked at childhood mental health and parental religious belief.