In this timely book, leading health law expert Edward S. Dove provides a unique and detailed introduction to health privacy law across numerous legal systems. He offers a rigorous exploration of, and commentary on, the key concepts, rules, principles, and functions of the primary legal regimes governing information in the health context, namely confidentiality, privacy, and data protection laws. Dove examines how the digitization of health, the advent of new medical innovations, artificial intelligence, and the drive toward data-driven research generate complex questions about private information. Taking UK law as its foundation, such as the Data (Use and Access) Act 2025, the book also addresses other jurisdictions, including Irish law and key European instruments such as the European Health Data Space Regulation. This critical work integrates analysis of legal frameworks with critical commentary, identifying areas of health privacy law that would benefit from further development or reform. A vital resource for students and academics of health law, digital law and medicine, Health Privacy Law will also be of interest to lawyers who require more in-depth knowledge about health privacy law in action, as well as policymakers and stakeholders in health services considering areas for potential future reform.