This book presents the origins, doctrine, institutions, and challenges confronting modern administrative law in Central and Eastern European countries. Administrative law was first defined by a Polish lawyer in the 19th century, but for historical reasons, there has been little scholarship on the subject in relation to countries in the region in recent times. This book fills this gap in the literature. It examines the roots and structure of administrative law in the Czech Republic, Hungary, Latvia, Lithuania, Poland, the Slovak Republic, and Ukraine. Each chapter examines the key concepts including historical background, the system of administrative law, the civil service, the spectrum of administrative activity, judicial review and other types of control over public administration, and administrative liability. The impact of European Union law on the legal order of the countries is also reviewed. The book will be of interest to students, academics, and researchers working in the areas of administrative law, public law, comparative law, and legal history.