Cognomen Ćuk (Ćuk 
) , across the world, is quite a rare last name. The surname Ćuk is characteristic of Southern Europe, particularly Croatia, where it is quite a common surname, Serbia, and Bosnia and Herzegovina.
| VARIANT | COUNTRY |
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| Ćuk | Sweden, Serbia, Croatia, Bosnia and Herzegovina, United States |
| avdo ćuk (b. 1920) |
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anđelko ćuk Croatian volleyball player, HR (b. 1983) |
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| josip ćuk Yugoslav sports shooter, HR (b. 1936) |
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gojko ćuk Montenegrin volleyball player, ME (b. 1988) |
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| milan ćuk Serbian politician (b. 1956) |
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| ruža ćuk (b. 1949) |
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| sreten ćuk Croatian football manager, HR (b. 1963) |
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| srđan ćuk Croatian rapper, HR (b. 1977) |
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| slobodan ćuk electrical engineer named for the Ćuk converter |
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| željka ćuk researcher |
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| ivan ćuk researcher (ORCID 0000-0001-7819-4384) |
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| blaž ćuk HR |
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| bonaventura ćuk HR |
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| mirjana ćuk |
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| božidar ćuk Montenegrin volleyball player, ME (b. 1992) |
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Mia, Luca, Luka, Jozo, Jure, Tomo, Toni, Tena, Nada, Nina, Nora, Nena, Neda, Vera, Fran, Ines, Ivan, Igor, Zora, Marin, Mario, Marta, Lara, Lana, Duje, Dora, Ana, Lav, Lea, Iva, Ivo, Mara, Mate, Maja, Mile, Mira, Marko, Miro, Mijo, Sara, Ante, Anja, Anka, Kata, Roza, Reza, Dara, Dino, Mija, and Manda