Simarterivirinae is a subfamily of enveloped, positive-strand RNA viruses which infect vertebrate.

The subfamily is in the family Arteriviridae and order Nidovirales.

[1] Member viruses are enveloped, spherical, and 45–60 nm in diameter.

[2] Variarteriviruses have a positive-sense single-stranded RNA genome.

[2] The subfamily Simarterivirinae contains six genera:[3]