Children and young people with developmental disabilities are a large and growing population. But across the world, children and young people with development disabilities have been neglected in services and policy provisions for health and continue to experience stigma, barriers to participation, widespread health inequalities and premature mortality. The aim of this report is to increase awareness of the public health significance of developmental disabilities and the need for increased investment and accountability at all levels. It proposes priority actions to accelerate individual-, family-, community-, and society-level changes to achieve inclusion and health equity.