Professions and their members (or ‘professionals’) are a conspicuous feature of modern capitalist societies. They operate in many arenas, including the business realm. The starting point for this paper is that the degree to which professions and their members act ethically can have an impact on the ethical quality or behaviour of business in general. In particular, given the focus of this volume, the contention is that ‘true’ professional behaviour has the potential to impact upon the degree to which large businesses are ‘good corporate citizens’. The aim of this chapter is to explore the nature of that potential, and to identify some of the issues involved in determining the degree to which that potential is realized.