This TIP, Substance Abuse Treatment and Family Therapy, addresses how substance abuse affects the entire family and how substance abuse treatment providers can use principles from family therapy to change the interactions among family members. The TIP provides basic information about family therapy for substance abuse treatment professionals and basic information about substance abuse treatment for family therapists. The TIP presents the models, techniques and principles of family therapy, with special attention to the stages of motivation as well as to treatment and recovery. Discussion also focuses on clinical decisionmaking and training, supervision, cultural considerations, specific populations, funding and research. The TIP further identifies future directions for both research and clinical practice.