This unique Companion provides a comprehensive overview and critical evaluation of existing conceptualizations and new developments in innovation research. It draws on multiple perspectives of innovation, knowledge and creativity from economics, geography, history, management, political science and sociology. The Companion brings together leading scholars to reflect upon innovation as a concept (Part I), innovation and institutions (Part II), innovation and creativity (Part III), innovation, networking and communities (Part IV), innovation in permanent spatial settings (Part V), innovation in temporary, virtual and open settings (Part VI), innovation, entrepreneurship and market making (Part VII), and the governance and management of innovation (Part VIII).