The research findings and publications in this collection are based on the ISSOP and INRICH research collaboration established in April 2020 to study the impact of the COVID-19 pandemic on children. Researchers from 18 countries from across the world contributed to the collection. The collection is organised into 6 thematic groups: Voices of Children, Children with Disabilities, Immunization, Policy studies, Parental and Child Stress and Clinical Studies. The main findings for each theme are presented followed by full citations of the publications. These publications offer a wide range of primary research, reviews of research, and editorial commentaries, which contribute to the literature on the pandemic and the advocacy of children’s rights and health equity.