In all the world, Ружичка (Ruzicka 
, Růžička 
, Ружичка 
) is a very rare girly first name. The first name Ружичка is characteristic of South-eastern Asia, particularly Indonesia, where it is a very rare female name. Much more prevalently, Ружичка is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Ruzicka | United States, Germany, Czechia, Slovakia, Austria |
| Růžička | France, United States, Germany, Czechia, Austria |
| Ружичка | Russia, Kyrgyzstan, Ukraine |
| Ružička | Czechia, Croatia, Slovakia |