Family name Grankovskii (Grankovskii 
, Гранковский 
) , in all the world, is a rare cognomen. The family name Grankovskii is habitual in Belarus, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Grankovskii | Russia, Belarus |
| Гранковский | Kazakhstan, Russia, Ukraine, Belarus |