Mens Rea in EU Antitrust Law is a groundbreaking book in which the author analyses the role in antitrust law of the concept of mens rea, the idea of the ‘guilty mind’, which has longheld significance in criminal law. With economic evidence assuming a key role in competition law analysis, the question of intent appears to be sidelined. Yet, this book offers an original, thorough and accessible analysis of the interplay between economic and intent-based evidence in European Union (EU) antitrust enforcement. It also provides a resolute stance on the arguments pro and con using mens rea and intent evidence in competition law enforcement, thus opening a new perspective in the ongoing paradigm shift in antitrust law.