This is an alphabetical list of genera of biological viruses. It includes all genera and subgenera of viruses listed by the International Committee on Taxonomy of Viruses (ICTV) 2019 report. * For a list of individual species, see List of virus species. * For a list of virus families and subfamilies, see List of virus families and subfamilies. * For a list of virus realms, subrealms, kingdoms, subkingdoms, phyla, subphyla, classes, subclasses, orders, and suborders, see List of higher virus taxa.