Surname Stoianovskaia (Стояновская 
, Stoianovskaia 
) , in all the world, is a rare family name. The cognomen Stoianovskaia is habitual in Russia, where it is a rare surname, Belarus, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Стояновская | Kazakhstan, Russia, Ukraine, Belarus |
| Stoianovskaia | Georgia |