The world is confronting a lengthening list of unresolved global challenges, many of which possess the properties of global public goods. However, we still lack a fully-fledged theory and practice of genuine global public policy. Based on an analysis of what sets global public goods, such as climate change, cyber-security, and international financial stability apart from other policy concerns, this chapter identifies five basic features that a global public policy would need in order to suit the purpose of global public good provision and develop into a recognized new policy field as a function of governance systems, nationally and internationally.