In recent years the circular economy has received increasing attention worldwide due to, inter alia, the recognition that security of supply of resources and environmental sustainability are crucial for the prosperity of countries and businesses. G20 countries should consider developing frameworks that enhance the circular economy and more generally sustainable production and consumption modes. In this context, they should 1) integrate the circular economy into discussions about implementing the 2030 Agenda for Sustainable Development and the Paris Agreement, 2) work towards agreed terminologies for circular economy products and processes, 3) support demand for circular economy products and services, 4) support transparency across global supply chains, 5) facilitate financing for establishing circular supply chains and 6) proactively address the transition issues.