Thinking and practice have evolved about the role that academics play in civic discourse, particularly about the influence of their scholarly, peer-reviewed research in the policy world. This chapter reviews different types of impact that academics have and can have inside the academy through publishing in academic journals, and outside the academy by translating knowledge to policy including through participating on and leading committees and other policy organisations. Both environments also include an under-appreciated type of impact, namely the legacy of one’s work through interactions with others. The chapter describes the changing landscape in which knowledge production and dissemination occur, highlighting the growth of international, collaborative work, to place the changing faces of impact into a broader environmental context. Finally, these two strands of impact and legacy are brought together for some concluding reflections about their future importance.