Surname Gromadskaya (Gromadskaya 
, Громадская 
) , all over the world, is a rare family name. The last name Gromadskaya is characteristic of Belarus, where it is a rare surname, Russia, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Gromadskaya | Russia, United States |
| Громадская | Kazakhstan, Russia, Ukraine, Belarus |