Family name Ружицькая (Ружицькая 
) , in the world, is an extremely rare cognomen. The family name Ружицькая is characteristic of Eastern Europe, particularly Ukraine, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ружицькая | Ukraine |
Rujickaia, Ruzhitskaia, and Ruzhitskaya