In recent years, an interdisciplinary debate on the social and political role of business corporations has evolved. With this special issue, we would like to facilitate a comprehensive discussion of three questions that are especially pertinent in that debate: (1) How is the social and political agency of corporations to be understood? (2) How should the power of corporations be analyzed? (3) Under which conditions would the social and political roles of corporations be legitimate? In this introduction to the special (...) issue, we start with a short outline of the debate. In the next step, we provide an overview of the five contributions. We conclude by summarizing what can be learned from those contributions with respect to the three research questions. (shrink)