In this meta-analysis, 9 published studies (N = 330) that investigated the efficacy of forgiveness interventions within counseling were examined. After a review of theories of forgiveness, it was discovered that the studies could logically be grouped into 3 categories: decision-based, process-based group, and process-based individual interventions. When compared with control groups, for measures of forgiveness and other emotional health measures, the decision-based interventions showed no effect, the process-based group interventions showed significant effects, and the process-based individual interventions showed large effects. Consequently, effectiveness has been shown for use of forgiveness in clinical and other settings.