Children’s healthy development is shaped by the myriad person-context interactions that promote—or harm—growth and well-being. Many children and their families who have migrated or immigrated across cultures have experienced war, poverty, natural disasters, or suffered extreme hardship. Forced migration experiences too frequently include exposure to interpersonal violence, trauma, and other severe hardships that can have lasting, deleterious effects on children’s development. Exposure to premigration (e.g., war, gang violence), migration (e.g., parental separations, child trafficking), and postmigration (e.g., racism, discrimination) violence, its mental health effects, and consequent life disruptions are discussed throughout this chapter. The chapter also emphasizes the latest research and thinking about how to support posttraumatic growth and personal/interpersonal healing among immigrant youth. Using evidence-based knowledge from these areas, the chapter suggests next steps for delivering clinical care, as well as designing programs and policies that support migrant-origin child and youth well-being.