Abstract-People in Aceh are still suffering from a highly traumatic experience of Aceh conflict. As a religious community, Acehnese people believe that forgiveness is righteous. The purpose of the present study was to examine the mediational role of forgiveness on the relationship between spirituality and posttraumatic growth (PTG). Two hundred sixty-eight participants were recruited to complete the Posttraumatic Growth Inventory (PTGI), Heartland Forgiveness Scale (HFS), and the Spiritual Transcendence Scale (STS). Results based on Sobel analyses revealed that forgiveness mediated the relationship between spirituality and PTG. Implications of these findings for future research on PTG and forgiveness are discussed.