The democratic deficit in contemporary global governance arrangements is a matter of increasing political and scholarly concern. The participation of transnational actors, such as civil society groups and corporations, in global governance is often put forward as a solution to this democratic deficit. However, most research into the democratic aspects of transnational actor participation in global governance has focused on the democratic qualities of the global governance arrangement at large – rather than specifically on the participating transnational actors. This book seeks to redress the balance and draws on case studies on the democratic legitimacy of different kinds of transnational actors, ranging from corporations and philanthropic foundations to non-governmental organizations, social movements, and diaspora groups. Combining normative democratic theory and empirical research into the legitimacy of transnational actors, the book offers innovative interpretations of democratic legitimacy in a transnational context.