Cognomen Rybár (Rybar 
, Rybár ) , all around the world, is quite a rare last name. The surname Rybár is habitual in Slovakia, where it is quite a common surname, Czechia, and Austria, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Slovakia, Czechia, and the United States.
| VARIANT | COUNTRY |
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| Rybar | Austria, Slovakia, Czechia, Brazil, United States |
| Rybár | Czechia, United States, Slovakia |
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rybár istván physicist (1886-1971), HU (b. 1886) |
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| rybár istván, id. (b. 1847) |
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ctibor rybár Czech publicist, CZ (b. 1920) |
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| ladislav rybár Czechoslovak linguist (1918-1991), SK (b. 1918) |
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| ján rybár (b. 1911) |
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| juraj rybár UA (b. 1915) |
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| michal rybár UA (b. 1919) |
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| peter rybár (b. 1945) |
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| jaroslav rybár Slovak assocation football player and coach (b. 1958) |
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| ján rybár (b. 1949) |
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| pavol rybár (b. 1950) |
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| ivan rybár (b. 1954) |
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| peter rybár footballer (b. 1969) |
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| pavol rybár Slovak ice hockey player and Olympic athlete, SK (b. 1971) |
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| patrik rybár Slovak ice hockey goaltender, SK (b. 1993) |
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Jan, Michal, Mário, Samuel, Andrej, Patrik, Daniel, Dušan, Dávid, Jiří, Eduard, Viliam, Zdenek, Šimon, Ľuboš, Róbert, Dominik, Lukáš, Tomáš, Timotej, Nikolas, Miroslav, Matúš, Maroš, Martin, Filip, Eni, Adam, Palo, Petr, Ján, Ivan, Marek, Matej, Maťo, Milan, Ladislav, Kamil, Pavol, Peter, Radek, Roman, Denis, David, Jakub, Josef, Jozef, Juraj, Pavel, and Jaroslav