Surname Ianovskaia (Яновская 
, Ianovskaia 
) , in the world, is quite a common last name. The cognomen Ianovskaia is habitual in Belarus, where it is quite a rare surname, Russia, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Яновская | Kazakhstan, Russia, Georgia, Belarus, Ukraine |
| Ianovskaia | Canada, Russia, Georgia, United States |