Last name Brajnović (Brajnović 
) , in all the world, is a rare family name. The cognomen Brajnović is habitual in Southern Europe, particularly Croatia, where it is quite a rare surname.
| VARIANT | COUNTRY |
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| Brajnović | Croatia |
| marko brajnović Croatian water polo player, HR (b. 1920) |
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| tomislav brajnović (b. 1965) |
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| marko brajnović Croatian water polo player, HR |
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| marčelo brajnović |
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Ana, Milica, Mladen, Sandra, Slavko, Andrea, Lucija, Josipa, Nikola, Eduard, Zrinka, Marijan, Martina, Anđela, Armando, Biserka, Danijel, Dražen, Antonela, Katarina, Marija, Šime, Zorka, Ivana, Ivo, Ante, Luka, Jeka, Jure, Vera, Ivan, Ivka, Marin, Krešimir, Marko, Stoja, Denis, David, Davor, Dinko, Josip, Juraj, Frane, Filip, Matea, and Tomislav