The challenge of realism is one of the common features of current philosophical debates, across different cultural traditions, and in many areas of investigation (epistemology, metaphysics, ethics, aesthetics, theory of action, etc.). The implications of realism for political philosophy and political practice, though, are just starting to become an object of systematic discussions. Such implications, however, are significant, since the area of politics is contiguous with that of ethics and action, for example. This volume intends to contribute to debates on the relevance of realism – especially moral realism – for politics. The essays included in the collection address a number of related issues, ranging from foundational problems of realism in ethics, action theory and politics, to questions about pragmatics, to difficulties in political theory, and to political hindrances related to economics and legal theory. The common focus of all essays is the relevance of realism for a conception of practical rationality in political contexts.