This manifesto for transforming public health calls for a social movement to support collective public health action at all levels of society—personal, community, national, regional, global, and planetary. Our aim is to respond to the threats we face: threats to human health and wellbeing, threats to the sustainability of our civilisation, and threats to the natural and human-made systems that support us. Our vision is for a planet that nourishes and sustains the diversity of life with which we coexist and on which we depend. Our goal is to create a movement for planetary health.