Last name Ганджумянц (Ганджумянц 
) , worldwide, is a very rare cognomen. The last name Ганджумянц is habitual in Eastern Europe, particularly Belarus, where it is a rare surname, Ukraine, where it is a very rare surname, and Russia, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ганджумянц | Russia, Ukraine, Belarus |