Decades of research highlight the protective tole of strong, positive, and secure relationships for children and young people at risk, both in the community and in out-of-home care. This volume offers an in-depth exploration of social support among young people in residential care and after leaving care, emphasizing its role in their well-being. Drawing on research from Australia, Brazil, Canada, Ghana, India, Ireland, Israel, Norway, the Netherlands, Portugal, Spain, and the United States, the contributions in this collection focus on the residential care setting while offering insights relevant to other out-of-home care contexts, such as foster care and educational residential facilities. Academics and professionals working in social work, education, child protection, and child psychology will find this book a valuable resource.