- Nairobi sheep disease virus
- Nairovirus
- Nanirnavirus
- Narcissus common latent virus
- Narcissus degeneration virus
- Narcissus late season yellows virus
- Narcissus latent virus
- Narcissus mosaic virus
- Narcissus symptomless virus
- Narcissus yellow stripe virus
- Nariva virus
- Ndumo virus
- Ndumu virus
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- Neckar River virus
- Necrovirus
- Neethling virus
- Nelson Bay orthoreovirus
- Nelson Bay virus
- Nemesia ring necrosis virus
- Nemtick Virus
- Neodiprion lecontei nucleopolyhedrovirus
- Neodiprion sertifer nucleopolyhedrovirus
- Neopvirus
- Nerine latent virus
- Nerine virus X
- Nerine yellow stripe virus
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- Neurotropic virus
- New World Arenavirus
- New York virus
- Newborn pneumonitis virus
- Newbury-1 virus
- Newcastle disease virus
- Ngaingan virus
- Nicotiana tabacum Tnt1 virus
- Nicotiana tabacum Tto1 virus
- Nilaparvata lugens reovirus
- Nile crocodilepox virus
- Nipah virus
- Nipple neck virus
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- Nodamura virus
- Noncytopathogenic virus
- Nootka lupine vein clearing virus
- Norovirus
- Northern cereal mosaic virus
- Norwalk virus
- Nothoscordum mosaic virus
- Ntaya virus
- nuclear polyhedrosis virus (NPV)
- Nudaurelia capensis beta virus
- Nudaurelia capensis omega virus
- Nupapillomavirus 1
- Nyando virus
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