Cognomen Dumoian (Думоян 
, Dumoian 
) , in the world, is a rare last name. The surname Dumoian is characteristic of Georgia, where it is a rare surname, and Russia. Much less frequently, Dumoian is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Думоян | Armenia, Russia |
| Dumoian | Georgia |