The proposed road map will lead to the development of a tool for measuring adolescent mental health. UNICEF, in collaboration with key partners, is working to fill a crucial data gap on adolescent mental health by creating a methodological framework for the development of data collection tools. Improved data and evidence on the prevalence and burden of mental ill‐health among adolescents, as well as on exposure to risk factors and access to interventions, is an essential step towards planning more effective and supportive programming and identifying vulnerable populations at higher risk.