Family name Dumančić (Dumančić 
) , in all the world, is quite a rare surname. The family name Dumančić is characteristic of Croatia, where it is quite a common surname, Bosnia and Herzegovina, where it is quite a rare surname, and Germany, where it is an extremely rare surname.
| VARIANT | COUNTRY |
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| Dumančić | Bosnia and Herzegovina, Croatia, Germany |
| hrvoje dumančić Croatian sculptor (b. 1975) |
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| mirta dumančić particle physicist |
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| jelena dumančić researcher (ORCID 0000-0002-6444-3041) |
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| antonia dumančić Croatian association football player, HR (b. 1989) |
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Mia, Ivan, Ivka, Maria, Marin, Mario, Marta, Marko, Matej, Matea, Matko, Mirta, Mirko, Sanja, Stipe, Stipo, Antun, Anita, Anica, Blaž, Karlo, Klara, Vera, Nena, Nela, Nina, Ana, Lea, Tin, Ela, Ena, Iva, Ivo, Ida, Maja, Mile, Paula, Ante, Dino, Dora, Lana, Leon, Luka, Jozo, Toma, Toni, Nada, Nika, Kata, and Petra