A growing evidence base supports the use of medication to treat opioid use disorder (OUD) in adolescents, but little is known about behavioral therapies for adolescents with OUD. A systematic review using PRISMA methodology was conducted on behavioral therapy for adolescent OUD. Only three studies were identified. Combined evidence from two studies indicates initial efficacy of the Adolescent-Community Reinforcement Approach, motivational enhancement therapy, and cognitive-behavioral therapy for reducing opioid use. The only group therapy identified, which involved adolescents and their parents, demonstrated improvement in participants' knowledge of relapse-prevention strategies, drug-refusal skills, and overall psychosocial functioning. Additional studies that included behavioral therapy but that did not specifically test its efficacy are also highlighted to expand the understanding of the small literature base. This review highlights the sparse evidence base for these therapies in this population. In addition, we highlight promising areas for future research and include evidence from the adult literature that may inform that research. Studies on behavioral therapies that utilize randomized, controlled trials for this population are imperative.