This paper introduces the concept of ''altruism born of suffering,'' and provides a review and integration of relevant research and theories from various disciplines. In contrast to the well-supported notion that prosocial behavior is rooted in positive experiences, whereas violence and adversity often contribute to further violence and antisocial behavior, it is proposed that suffering may actually enhance the motivation to help other disadvantaged members of society, including outgroups. A motivational process model is presented that includes a typology of altruism born of suffering, integrates clinical and social psychological perspectives on underlying processes, and proposes potential mediators and moderators. Relevant empirical studies are reviewed that provide initial support for this model. A particular emphasis is placed on victims of group-based violence, and implications for intergroup relations and social justice.Keywords Altruism Á Prosocial behavior Á Suffering Á Collective violence Á Intergroup relations A commonly held view is that altruism and prosocial behavior originate in positive experiences and processes, whereas antisocial behavior is often rooted in negative conditions and life experiences. Indeed, social psychological theories of altruism and prosocial behavior tend to study the phenomenon in the general population and have focused on positive factors, whereas most research on traumatic events and adverse life experiences is centered in the field of clinical psychology and has focused on negative, psychopathological effects.