Surname Ondrášek (Ondrášek 
) , around the globe, is a rare cognomen. The cognomen Ondrášek is characteristic of Eastern Europe, particularly Czechia, where it is quite a rare surname, and Slovakia, where it is a rare surname. Very seldom, Ondrášek is the forename as well as the last name.
| pavel ondrášek Slovakian Righteous Among the Nations, SK (b. 1910) |
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| vladimír ondrášek (b. 1918) |
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| františek ondrášek CZ (b. 1924) |
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zdeněk ondrášek Czech association football player, CZ (b. 1988) |
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| miloš ondrášek CZ (b. 1929) |
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| luboš ondrášek CZ (b. 1929) |
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| ján ondrášek Czechoslovak soccer player (b. 1942) |
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| petr ondrášek Czech soccer player (b. 1955) |
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| vít ondrášek CZ (b. 1959) |
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| pavel ondrášek Czech general, CZ (b. 1971) |
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| martin ondrášek CZ (b. 1965) |
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| ivo ondrášek CZ (b. 1978) |
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| stanislav ondrášek |
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| michal ondrášek SK (b. 1983) |
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