In our opinion, the division of journals citation into three branches reflects the definition of nanotoxicology given in 2010 by Oberdörster and demonstrates the absence of specialized journals focusing on nanotoxicology as an interdisciplinary field of knowledge. The appearance of such a journal would contribute to the development of conceptual and methodological apparatus of nanotoxicology. Table shows that the top nanotoxicology journals. These journals are characterized by many articles on nanotoxicology published from 2011 to 2020 and their high citation rate.