Cognomen Калницкиы (Калницкиы 
) , throughout the world, is an extremely rare last name. The last name Калницкиы is habitual in Eastern Europe, particularly Russia, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Калницкиы | Russia |
Kalnickiy, Kalnitskiy, and Kalnytskyy