This chapter discusses the treatment of substance use disorders within community corrections populations. The history of substance abuse treatment within correctional populations is outlined to provide context for the current diversion and rehabilitation models currently in use. Common systems where treatment is provided such as mental health court, drug court, and TASC are described. Common forms of therapy including Cognitive Behavioral Therapy, Mindfulness, social skills training, pharmacotherapy, and smoking cessation are discussed. This chapter focuses on their effectiveness as well as how these forms of therapy differ in community corrections as compared to other populations. Finally, recommendations and future directions for research are provided.