Waikavirus is a genus of viruses in the order Picornavirales, in the family Secoviridae.

Plants, poaceae, cyperaceae, and gramineae serve as natural hosts.

Diseases associated with this genus include: MCDV: plant stunting and chlorotic striping of tertiary leaf veins in maize.

[1][2] The genus contains the following species:[2] Viruses in Waikavirus are non-enveloped, with icosahedral geometries, and T=pseudo3 symmetry.

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