Oryzavirus is a genus of double-stranded RNA viruses in the family Reoviridae and subfamily Spinareovirinae.

Member viruses infect plants and are transmitted by planthoppers.

Diseases associated with this genus include: rice stunting, enations on veins of leaves and leaf sheaths, ragged leaves, and flower suppression.

[1][2] Viruses in Oryzavirus are non-enveloped, with icosahedral and Round geometries, and T=13, T=2 symmetry.

The virus exits the host cell by monopartite non-tubule guided viral movement.