The paper is devoted to the study of the types of non-banking financial organizations. A classification  is an integral part of scientific knowledge, which allows us to visually demonstrate the inner content of the  category under consideration and identify the features of each element of the analyzed concept. The research  issue of the paper is predetermined by the lack of legal division between non-banking financial organizations.  The classification given in the paper, according to the author, on the one hand, most fully reflects the range of  financial services provided by non-banking financial institutions, and, on the other hand, allows differentiating the roles that separate non-banking financial institutions play in the organization and functioning of the financial  market. The latter is important for determining the specifics of legal regulation of different groups of non-banking  financial organizations, since each of them has a different meaning for ensuring the stability and sustainability of  the financial market. The paper reflects the author’s position concerning the definition of the concept of "non-banking financial organizations" and the place of individuals providing professional services in the financial market  in the system of financial organizations.