Claude Steiner (January 6, 1935 – January 9, 2017) was a French-American psychologist and psychotherapist, best known for his contributions to Transactional Analysis (TA). A close collaborator of Eric Berne, Steiner developed the concept of emotional literacy, emphasizing the importance of recognizing, expressing, and managing emotions. He authored influential books such as "Emotional Literacy: A Practical Guide to Making Connections with Others" and "Games Alcoholics Play." Steiner's work focused on power dynamics in relationships, cooperative communication, and psychological health. His ideas have been widely applied in counseling, education, and organizational development. He spent his later years promoting nonviolent communication and community mental health.