This report presents the findings from a survey of children aged 9–16 from 19 European countries. The data were collected between autumn 2017 and summer 2019 from 25,101 children by national teams from the EU Kids Online network. A theoretical model and a common methodology to guide this work was developed during four phases of the network’s work, and is discussed at the outset of this report. The main findings from the key topic areas are summarised, which correspond to the factors identified in the theoretical model: Access, Practices and skills, Risks and opportunities, and Social context. Throughout the report, findings are presented according to the countries surveyed, and the gender and age of the children. The survey findings are comparable across countries, and the methodology section presents the common methods followed.