Power pervades interpersonal relationships and can impact relationship-related outcomes (e.g., forgiveness). Here, we expected a positive association between power and forgiveness in two studies involving German and Israeli couples (N = 149/174 couples). Actor–partner interdependence mediator models showed the expected positive associations of actor’s power with both actor’s forgiveness and partner’s forgiveness. Independent self-esteem partially mediated and interdependent self-esteem completely mediated the power–forgiveness link for actors. Also, high experienced power was associated with high self-esteem, which in turn was positively related to benevolence motivation and negatively related to revenge and avoidance motivation. The implications of these findings are relevant for couple’s therapy and advance our understanding of associations between power and relationship variables. Future research may distinguish between authentic and instrumental forgiveness and use experimental settings.