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Last name Ružička (Ruzicka , Ružička , Ружичка ) , all over the world, is a common cognomen. The last name Ružička is habitual in Czechia, where it is quite a common surname, Slovakia, and Austria, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Czechia, the United States, and Slovakia. Very seldom, Ružička is the forename as well as the last name.
Mia, Peter, Petar, Rajko, Radek, Roman, Denis, Darko, Jakub, Josef, Jozef, Juraj, Tomas, Elena, Vesna, Filip, Ivana, Marina, Marija, Martin, Matúš, Michal, Pavel, Karol, Boris, Mirko, Jan, Ivo, Maja, Alen, Arno, Adam, Petr, Deni, Leon, Luka, Andrea, Jana, Tino, Nada, Nino, Ines, Ivan, Igor, Marek, Matej, Matea, Milan, Jano, and Robert