Research on intergroup forgiveness is accelerating. Intergroup forgiveness is an interpersonal process by which an individual offers forgiveness toward a group for an offense committed against them because of their identity with or membership of a particular group. A theoretical model of intergroup forgiveness was proposed by Van Tongeren et al. (2014) that identified affective (empathy, negative emotions, and collective guilt), cognitive (trust, perceived victimhood, and amends), and constraining (ingroup identity, common superordinate group identity, and intergroup contact) factors. This present chapter is an update on that meta-analysis. We review 30 papers published since that review. The majority of those papers provide support for the theoretical model. Our qualitative review of these articles confirms that empathy, collective guilt, trust, amends, common superordinate group identification and contact are positively associated with intergroup forgiveness, whereas negative emotions, perceived victimhood, and ingroup identification are negatively associated with intergroup forgiveness. We discuss implications of this review and offer suggestions for future research to help advance this burgeoning field of study.