Carmotetraviridae is a family of positive-strand RNA viruses.

There is only one genus in this family, Alphacarmotetravirus, which has one species: Providence virus.

[1][2] Viruses in Carmotetraviridae are non-enveloped, with icosahedral geometries, and T = 4 symmetry.

The genome codes for two proteins, and has three open reading frames.

Transmission routes are oral and tissue tropism is the midgut.