Nine out of every 10 refugees arriving in host countries from Ukraine are women and children. Only 1 in 3 of Ukrainian refugee children are enrolled in early childhood education and care services. This emphasizes the need for expanding and strengthening early childhood education systems to ensure sufficient access for all children, and the integration of Ukranian refugee children in the host-community. These briefs offer recommendations for policymakers on ways to expand services, and how to facilitate the integration of refugee children and their families. Strategies include limiting the barriers that may hinder refugee children's access to ECEC settings, capitalizing existing physical and human resources to address gaps in service delivery, in addition to the inclusion of refugees in national and sub-national plans, data systems and financing, adapting policies and programmes to ensure considerations are made for refugee children. This first brief focuses on the integration of young refugee children through early childhood education and care. [For the second brief in this series, see ED627655.]