The relevance of the studied topic is that subjects of administrative law are one of the most important elements of the legal system, since we are talking about such participants in administrative-legal relations who solve tasks and perform the functions of executive power, who coordinate administrative and control-supervisory powers in branches of state administration and local self-government, consider cases of administrative offenses committed by individuals and legal entities in various spheres of public life, etc. It is important to clearly classify the place of each element of the system of administrative legal relations, in order to understand the direct powers and duties assigned to it. Without a deep understanding of the assigned role by each participant in administrative and legal relations, the very functioning of such a system is at risk. The main problems that need to be considered and solved at the new stage of the development of modern science and practice include the definition of subjects of administrative law, the analysis of their essence and features, as well as the outline of the main criteria for classification. A necessary condition for the successful reform of administrative law as a fundamental branch of Ukrainian state law is the updating of the provisions of the theoretical and methodological base of administrative and legal science. The article examines the systems of classification of subjects of administrative law existing in modern legal science. The essence and content of the concept of “subject of administrative law”, as well as generally accepted definitions of this term, were studied. An attempt was made to establish the place of a lawyer in the system of subjects of administrative law of Ukraine. A comprehensive approach to distinguishing and classifying a lawyer as a subject of administrative law is applied, taking into account the peculiarities of legal status, organizational and legal form of activity and the scope of public powers. However, the analysis of special literature shows that only a few researchers tried to consider the lawyer as a subject of administrative law or to determine his place in the accepted classifications.