Cucumovirus is a genus of viruses, in the family Bromoviridae.

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

[1][4] It is thought that cucumoviruses are present worldwide, being known to occur in Eurasia, Australia, Canada, France, India, Japan, North and South Korea, Morocco, New Zealand, Poland, Spain, the US, and the former USSR.

Its natural hosts belong to the domain Eukaryota.

The vectors may be arthropods, specifically insects of the order Hemiptera, family Aphididae (colloquially one would say cucumovirus is transmitted by aphids).