The maintenance of a fair, competitive market among member states is critical to the functioning of the EU economy. In this book, the first comprehensive, unifying view of market definition, Miguel Ferro adeptly explores the different economic-legal issues that arise in EU competition law. Featuring an exhaustive analysis of European case law, this astute work provides a succinct and nuanced guide to market definition within a variety of markets and contexts. Insightful and timely, it explores the different economic-legal issues that arise in European case law, distinguishing economic debates from the legal issues involved. In so doing, it seeks to prevent the distortions to the legal method that can result from adopting a more piecemeal approach. Market Definition in EU Competition Law provides a crucial introduction to the topic and will be an important resource for students and scholars of European competition law. Practitioners and judges will also benefit from the extensive analysis of case law and the practical examples.