Cognomen Petráček (Petráček 
) , worldwide, is a rare last name. The cognomen Petráček is habitual in Eastern Europe, particularly Czechia, where it is quite a rare surname.
| františek petráček Czechoslovak soldier, CZ (b. 1897) |
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| karel petráček CZ (b. 1893) |
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| vratislav petráček Czech gymnast, CZ (b. 1910) |
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vojtěch petráček Czech nuclear physicist, CZ (b. 1964) |
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tomáš petráček Czech priest, CZ (b. 1972) |
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| eugen petráček CZ (b. 1916) |
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| zdeněk petráček Czechoslovak pedagogue, CZ (b. 1926) |
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| karel petráček Czechoslovak translator, CZ (b. 1926) |
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| svatopluk petráček CZ (b. 1925) |
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| miloslav petráček (b. 1925) |
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| rudolf petráček (b. 1926) |
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| jiří petráček association football player (1946-) (b. 1946) |
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| oldřich petráček Czech businessman, CZ (b. 1950) |
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| jiří petráček CZ (b. 1941) |
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| vladimír petráček CZ (b. 1942) |
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