Gammaflexiviridae is a family of viruses in the order Tymovirales.

Fungi serve as natural hosts.

There is only one genus in the family, Mycoflexivirus, which has one species: Botrytis virus F.[1][2][3] Viruses in Gammaflexiviridae are non-enveloped, with flexuous and filamentous geometries.

The genome has 2 open reading frames.

Fungi serve as the natural host.