Exposure to traumatic events is widespread. Research suggests that almost 90% of American older adults have been exposed to at least one traumatic event during their lifetime. This trauma affects adults as they age as well as those who provide for their care. To provide care for the growing population of older adults in the United States, it is essential to understand the role of trauma in aging and how person-centered, trauma-informed (PCTI) care can help. ‘Aging with a History of Trauma’ is a guide for anyone working and volunteering in aging services on how to deliver PCTI care to older adults with a history of trauma and family caregivers. In this guide, you will find information about the role of trauma in aging, the PCTI approach, and recommendations on supporting diverse older adults and family caregivers.