The J-SOAP-II is a structured risk assessment tool designed to evaluate risk of sexual violence and general offending in adolescent males (12–18 years) with a history of coercive sexual behavior. The J-SOAP-II is relevant to the field of criminal psychology given that it is one of the most commonly administered risk assessment tools designed for adolescent sexual offenders in the United States and Canada. Moreover, the J-SOAP-II was specifically designed to aid in treatment planning and in monitoring treatment-related change. After a description of the J-SOAP-II, this entry discusses its purpose and development and provides a brief overview of empirical findings regarding its reliability and validity.