Child friendly spaces (CFS) have become a widely used approach to protect and provide psychosocial support to children in emergencies. However, little evidence documents their outcomes and impacts. There is widespread commitment among humanitarian agencies to strengthen the evidence base of programming. Recognizing this, the Child Protection Working Group (CPWG) of the Global Protection Cluster and the Inter-Agency Standing Committee (IASC) Reference Group on Mental Health and Psychosocial Support in Emergency Settings have identified research in this area as a high priority.