This inter-agency, desk-based research aims to arrive at a clearer understanding of reintegration practices for separated children in low and lower-middle income countries. The research pulls together learning from practitioners and academics working with a range of separated children, such as those torn from their families by emergencies, children who have been trafficked or migrated for work, and children living in institutions or on the streets. Practitioners and researchers who work with these different population groups are for the most part unaware of the approaches and methods used in other areas of child protection, and this research aims to  consolidate experience and create opportunities for dialogue and shared learning. The findings are based on an in-depth review of 77 documents, a short online survey involving 31 practitioners and policy makers, and key informant interviews with 19 individuals with expertise in children’s reintegration.