Cognomen Gladkovsky (Gladkovsky 
, Гладковский 
) , in the world, is a rare family name. The last name Gladkovsky is characteristic of Belarus, where it is quite a rare surname, Russia, where it is a rare surname, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Gladkovsky | Russia |
| Гладковский | Kazakhstan, Russia, Ukraine, Belarus |
Гладковскы, and Гладковський
| sergei v gladkovsky researcher |
|