| Family | | Host(s) |
|---|
| Arenaviridae | | vertebrate |
| Arteriviridae | | vertebrate |
| Astroviridae | | vertebrate |
| Avsunviroidae | | plant |
| Barnaviridae | | fungus |
| Birnaviridae | | invertebrate, vertebrate |
| Bornaviridae | | vertebrate |
| Bromoviridae | | plant |
| Bunyaviridae | | plant, vertebrate |
| Caliciviridae | | vertebrate |
| Caulimoviridae | | plant |
| Chrysoviridae | | fungus, plant |
| Circoviridae | | vertebrate |
| Closteroviridae | | plant |
| Comoviridae | | plant |
| Coronaviridae | | vertebrate |
| Cystoviridae | | bacteria |
| Dicistroviridae | | invertebrate, plant |
| ds satellite RNAs | | fungus |
| Endornaviridae | | fungus, plant |
| Filoviridae | | vertebrate |
| Flaviviridae | | vertebrate |
| Flexiviridae | | plant |
| Geminiviridae | | plant |
| Hepadnaviridae | | vertebrate |
| Hepeviridae | | vertebrate |
| Hypoviridae | | fungus |
| Inoviridae | | bacteria |
| Leviviridae | | bacteria |
| Luteoviridae | | plant |
| Marnaviridae | | protozoa |
| Metaviridae | | fungus, invertebrate, plant, protozoa |
| Microviridae | | bacteria |
| Nanoviridae | | plant |
| Narnaviridae | | fungus |
| Nodaviridae | | invertebrate, vertebrate |
| Ophioviridae | | plant |
| Orthomyxoviridae | | vertebrate |
| Paramyxoviridae | | vertebrate |
| Partitiviridae | | fungus, plant |
| Parvoviridae | | invertebrate, vertebrate |
| Picobirnaviridae | | vertebrate |
| Picornaviridae | | vertebrate |
| Pospiviroidae | | plant |
| Potyviridae | | plant |
| Pseudoviridae | | fungus, invertebrate, plant, protozoa |
| Reoviridae | | fungus, invertebrate, plant, vertebrate |
| Retroviridae | | vertebrate |
| Rhabdoviridae | | plant, vertebrate |
| Roniviridae | | vertebrate |
| Sequiviridae | | plant |
| ss satellite DNAs | | plant |
| ss satellite RNAs | | plant |
| ssRNA satellite viruses | | invertebrate, plant |
| Tetraviridae | | invertebrate |
| Togaviridae | | vertebrate |
| Tombusviridae | | plant |
| Totiviridae | | fungus, protozoa |
| Tymoviridae | | plant |
| Unallocated dsDNA viruses | | |
| Unallocated dsRNA viruses | | |
| Unallocated ssDNA viruses | | |
| Unallocated ssRNA+ viruses | | |
| Unallocated ssRNA- viruses | | |
| Unallocated viroids | | plant |
| Viruses with unknown genomes | | |
