We have previously discussed the application of Functional Analytic Psychotherapy (FAP) with adults who have committed sexual offense behaviors (Newring & Wheeler, 2010). The present entry borrows heavily from the foundation presented in that chapter, and extends this approach to working with adolescents, youth, and juveniles with sexual offense behaviors. We synthesize what is known about adults who exhibit sexual offense behavior, sexual offense behaviors exhibited by adolescents, and the application of FAP to adults and adolescents. We then discuss how FAP can be used when working with adolescents who exhibit sexual offense behaviors, to address those factors that have been empirically associated as relevant to a youth's risk of sexual or violent reoffense. (Contains 2 tables.)