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Cognomen Opačak (Opačak ) , worldwide, is quite a rare family name. The cognomen Opačak is habitual in Croatia, where it is quite a common surname, and Germany, where it is an extremely rare surname.
Mia, Jure, Tomo, Toni, Tena, Tina, Nika, Neda, Emma, Vito, Vera, Ivan, Igor, Marin, Mario, Marko, Manda, Mateo, Matej, Matea, Matko, Milan, Luka, Lana, Roko, Pero, Ana, Gea, Teo, Tea, Tin, Ema, Eva, Iva, Ivo, Mate, Milka, Mato, Mila, Miro, Mijo, Sara, Alen, Alma, Anto, Ante, Anja, Kata, Maja, and Mirko