International Economics and Business offers an integrated perspective on the (changing) role of nations and firms in the global economy. It is partially based on an earlier book published by Cambridge University Press in 2006, written by three of the present four authors (in conjunction with Arjen van Witteloostuijn) and entitled Nations and Firms in the Global Economy. Although the basic idea has remained the same, the underlying philosophy and overall organization of this book are more explicit and pronounced. We discuss aspects of the global economy typically found in international economics and in international business. The book is targeted at first- or second-year undergraduate students, and we have written the book in such a way that students familiar with basic calculus and mathematics are able to understand the material we present. In terms of a typical economics or business curriculum, this means that you have probably had introductory courses on statistics and microeconomics. If you are a student enrolled in an economics programme, this book serves as an introduction to international economics, including a discussion on the most essential theories of international business. If you are a student following a business programme, this book serves as an introduction to international business, including a discussion of the essentials of international economics. Having successfully mastered the material we present to you in this book, an economics student may subsequently follow an intermediate international economics course, while a business student may continue by taking an intermediate international strategy course. We provide common ground for both undergraduate communities.