The major arguments of this paper are that there is a need for an integrating framework for the study of regulation, including the design of regulatory institutions, and that the theory of agency may provide such a framework. The paper provides a brief overview of this approach. The theory of agency is a general theory of social relationships of “acting for” that is now under development in several disciplines, particularly economics and accounting. Regulation is seen as a generic relation observed widely in social behavior, and as a particular type of agency relationship. The problems of agency relations–e.g., the problems of principals in controlling agents and of agents in acting according to the principals' desires–have their counterparts in reg