The purpose of this article is to begin applying the principles of the psychology of forgiveness to people who are without homes and people who are in prisons. A review of the literature shows trauma for both groups. When the trauma is caused by unjust treatment by others, then excessive anger can result, compromising one’s psychological and physical health. We review the interventions which have been offered for those without homes and the imprisoned to examine which existing programs address such anger. Forgiveness Therapy, although untried in these two settings, may be one beneficial approach for substantially reducing unhealthy anger. Forgiveness interventions have shown a cause‐and‐effect relationship between learning to forgive and overcoming psychological compromise such as strong resentment and clinical levels of anxiety and depression. The literature review here suggests that Forgiveness Therapy for those without homes and the imprisoned may be a new and important consideration for ameliorating anger and aiding in a changed life‐pattern.