Surname Udvardi (Udvardi 
, Удварди 
) , all over the world, is quite a rare cognomen. The surname Udvardi is habitual in Hungary, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Croatia, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in Hungary, Afghanistan, and Austria. Much less frequently, Udvardi is the forename as well as the last name.
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| Udvardi | Hungary, Afghanistan, Austria, Slovakia, Romania |
| Удварди | Russia |
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udvardi erzsébet Hungarian painter (1929-2013), HU (b. 1929) |
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| jános udvardi Hungarian engineer, politician (1890-1943), RS (b. 1890) |
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| udvardi jános badminton player, HU (b. 1950) |
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| udvardi endre association football player, HU (b. 1959) |
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| udvardi istván Hungarian water polo player (1960-2012), HU (b. 1960) |
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| michael udvardi researcher |
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| michael udvardi American plant biologist |
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| zalan udvardi chess player |
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Mr, Sanja, Sarah, Anita, Anett, Carla, Csaba, Balã, Brian, Karin, Marga, Kinga, Peter, David, Dóra, Gabor, Gyula, Laura, Letti, Janos, Josip, Klaus, Mario, Maria, Éva, Ms, Sam, Eva, Mary, Sara, Alex, Anna, Anja, Kata, Kirk, Dani, Gabi, Luke, John, Jeno, Juan, Nils, Nora, Hene, Iren, Imre, Jorge, and Julia