The fundamentals, cultural considerations, and actions to be taken to address trauma through peer support are explained. “This guide was created for a very specific purpose: to help make trauma-informed peer support available to women who are trauma survivors and who receive or have received mental health and/or substance abuse services. It is designed as a resource for peer supporters in these or other settings who want to learn how to integrate trauma-informed principles into their relationships with the women they support or into the peer support groups they are members of. The goal is to provide peer supporters—both male and female—with the understanding, tools, and resources needed to engage in culturally responsive, trauma-informed peer support relationships with women trauma survivors” (p. 1). Thirteen chapters are in this publication: introduction to trauma and trauma-informed practices; whether one is a trauma survivor or not; peer support fundamentals; gender policies and the criminalization of women; culture and trauma; religion, spirituality, and trauma; trauma-informed peer support across the lifespan; trauma and peer support relationships; self-awareness and self-care; organizational context—working in systems; trauma-informed storytelling and other healing practices; self-inflicted violence and peer support; and reclaiming power through social action.