Cognomen Илнитцкая (Илнитцкая 
) , in the entire world, is an extremely rare last name. The family name Илнитцкая is habitual in Eastern Europe, particularly Russia, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Илнитцкая | Russia |
Ilnitckaia, and Ilnitskaya