Tenuivirus is a plant virus genus belonging to Phenuiviridae family in the order Bunyavirales.

The virion particle consists of non-enveloped nucleocapsids that exhibit helical symmetry, forming thin, filamentous structures between 500–2100 nm long.

The genomes are segmented and consist of four to six strands of negative-sense single-stranded RNA and the N-protein.

These viruses are transmitted by an arthropod vectors in the families Cicadellidae or Delphacidae.

Tenuivirus has close phylogenic relationship with members of the genus Tospovirus, the virions of which are bounded with an envelope.