Enzyme Nomenclature (1978) is an attempt to address the problems and difficulties that arise in the naming of enzymes and coenzymes. In this regard, the International Union of Biochemistry established the International Commission on Enzymes with the task of creating a standard or code for the future naming of enzymes and to correct and organize the existing names and groups. The text is divided to five chapters where the last two are references and index to the enzyme list. Chapter 1 establishes the premise of the text and explains the historical development of the commissions. Chapter 2 meanwhile gives more details regarding the general principles of enzymes and their system of classification. The rules for classification and nomenclature, as well as the key to the numbering and classification, of enzymes are also discussed. Finally, Chapter 3 lists all of the enzymes under several groups such as hydrolases and ligases. The book will be a valuable source of reference not just for students but also for scientists and researchers in the field of biochemistry, applied science, and nutrition.