Mivirus is a genus of negative-strand RNA viruses which infect arthropods.

[1] Member viruses have nonsegmented and bisegmented genomes.

[3] The name Mivirus derives from 芈 (Mǐ), the ancestral name of King Zhuang of Chu during the Spring and Autumn period, along with -virus, the suffix for a virus genus.

[4] Miviruses have nonsegmented and bisegmented genomes which are linear.

Some member viruses may have circular genomes.