A review of the biography and scientific contributions of S. V. Pogrebnyak (1961–2016), a scientist in the field of zoology, who devoted his entire life to studying biotic diversity, in particular arthropods and mollusks. Sviatoslav Pogrebnyak after graduating from the Biological Faculty of the University of Kyiv (1987) worked in different positions at different departments of the National Academy of Sciences of Ukraine, including the Insti-tute of Zoology and the National Museum of Natural History (NMNH). Sviatoslav published more then 30 sci-entific works, including two catalogues of NMNH collections. He described several animal species new for the science, carried out a number of expert studies on the effects of hydro- and industrial constructions on natural complexes, investigated the specifics of mite assemblages in industrial orchards, and amassed a significant number of biological samples for natural collections. Such significant events in the life of the museum as the appearance and development of the National Museum’s website, server, and computer network, as well as the creation of electronic catalogues of museum collections occurred thanks to Dr. Pogrebnyak.