The Handbook of Deontic Logic and Normative Systems presents a detailed overview of the main lines of research on contemporary deontic logic and related topics. Although building on decades of previous work in the field, it is the first collection to take into account the significant changes in the landscape of deontic logic that have occurred in the past twenty years. These changes have resulted largely, though not entirely, from the interaction of deontic logic with a variety of other fields, including computer science, legal theory, organizational theory, economics, and linguistics. The second volume of the Handbook is divided into four parts, containing ten chapters in all, each written by leading experts in the field. The first three parts supplement the material offered in the first volume on historical foundations of deontic logic, specific problems of contemporary interest in new logical frameworks. The fourth part contains articles discussing applications of deontic logic in a number of different fields.