The field of industrial organization (IO) is applied microeconomics/price theory concerned with the function of markets and the behaviour of firms in these markets. In this course the focus is on two primary questions: i) how do we explain observed behavior, prices or contractual practices by firms operating in markets that are not perfectly competitive? ii) what is the role of government intervention in affecting market structure, the behaviour of firms, and the efficient operation of markets? Recent developments in IO are both theoretical and empirical. This IO course stresses an understanding of the theory, including extensions and modern developments and applications of the theory.