Purpose: The purpose of this study was to test the effects of a forgiveness therapy program to improve self-esteem, anger and forgiveness in people who abuse alcohol. Methods: A non-equivalent control group pre-posttest design was employed. Participants were 38 people who abuse alcohol and who agreed to participate in this study. They were assigned to the experimental group in Alcoholics Anonymous meetings of J hospital(n=19) and the control group in Alcoholics Anonymous meetings of B hospital(n=19). The eight session program was provided once a week for 8 weeks. The data were analyzed using percentage, x2-test, Kolmogorov - Smirnov test, and t-test with SPSS 21.0 program. Results: The results showed significant decrease in state anger and increase in self-esteem and forgiveness in the experimental group compared to the control group. Conclusion: The findings show that forgiveness therapy program has a positive effect on self-esteem, anger, and forgiveness of people who abuse alcohol but further studies will be needed in order to determine the long term effects of an extended integrated program on rehabilitation of these people.