Delinquent behavior is a parental concern during the period of adolescence. Previous theories and studies suggested that high parental control relates to lower delinquent behavior. However, Nye’s social control theory suggests a curvilinear rather than a linear relationship between parental control and delinquency. This study uses Nye’s social control theory to explore a curvilinear relationship between parental control and delinquency. Data concerning parental control and delinquency from Wave I of the National Longitudinal Study of Adolescent Health (Add Health) was analyzed using negative binomial regression in conjunction with “Svy” estimation method. The adolescents in the sample ranged from ages 12–21 years old (M = 15.55) and varied in race/ethnicity, family structure, and socioeconomic status. The quadratic term of parental control had a significant relationship with delinquency while controlling for the linear term of the parental control variable and covariates. The results suggested that high and low parental control related to higher levels of delinquent behavior. Moderate amounts of parental control related to lower levels of delinquent behavior. The practical and clinical implications of the findings are discussed within the study.