Based on the assessment of the data in Table , the number of citations, the average number of citations per publication, and, to a lesser extent, the number of publications issued on the topic, we present Table of the top-5 best nanotoxicologists for 2011 -2020 according to the Dimensions database. Short biography of three researchers with the highest H-indices, according to Google Scholar, is presented in Supporting Information. Based on the study of the biographies of leading nanotoxicologists, in our opinion, there is a shortage of professional biological and medical specialists. However, leading scientists of the industry took part in the creation of textbooks and monographs on nanotoxicology. It allows us to hope for the appearance of an interdisciplinary (biological, chemical, medical, and environmental) complex of competencies in the next generations of specialists.