ABOUT THE CONCEPT OF CRIMINAL-PROCEDURAL LAW The article examines the concepts of the law of criminal procedure, given pre-revolutionary, Soviet lawyers and legal scholars of the modern stage of procedural science development. <...> Special a ention is paid to the category of criminal procedural activities, as a key element of the de nition of criminal procedural law. <...> K e y w o r d s: law of criminal procedure, criminal procedure, criminal-procedural activities, sources of law of criminal procedure. <...> Особое внимание обращается на категорию «уголовно-процессуальная деятельность» как ключевой элемент дефиниции уголовно-процессуального права! <...>