This chapter discusses how to re-think socio-ecological functions for urban areas in an economy inspired by the principles of circular and regenerative practices. It begins by showing how existing food systems have been trapped in the paradigm of a linear economy model. It then shows how regenerative urban agri-food systems can be built through a circular economy approach. It also presents and discuss how novel natural resource networks can be created in circular food economies in urban areas. The chapter reviews strategies and examples of how this can be achieved, as well as bottlenecks and how they can be overcome.