Family name Комарницка (Комарницка 
) , across the world, is an extremely rare cognomen. The cognomen Комарницка is characteristic of Eastern Europe, particularly Ukraine, where it is an extremely rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Комарницка | Russia, Ukraine |
Komarnicka, Komarnitska, and Komarnytska