Whether forgiveness is essential for intergroup reconciliation may be disputable, but its potential ability to repair human relationships following offenses committed based on group membership remains of considerable importance. The primary focus of this Special Issue is on the social-contextual factors that encourage forgiveness of past wrongs and the extent to which forgiveness results in meaningful improvement in intergroup relations. The concept of intergroup forgiveness has only appeared on the research agenda of social psychologists over the last decade, so there is still much room for conceptual clarification, empirical validation, and applications to understanding intergroup reconciliation. Significant progress has been made by investigating predictors and correlates of intergroup forgiveness, and the research presented in this Special Issue further illuminates the processes involved in intergroup forgiveness, as well as important consequences. This collection of empirical articles, based on diverse theoretical perspectives and empirical approaches to studying the phenomenon of intergroup forgiveness inside and outside of the laboratory, advance our understanding of when and how improvement emerges across a wide range of real and enduring conflicts.