Surname Kusák (Kusák 
) , around the globe, is a rare cognomen. The surname Kusák is characteristic of Eastern Europe, particularly Czechia, where it is quite a rare surname.
| VARIANT | COUNTRY |
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| Kusák | Czechia |
| alois kusák Czech attorney in Moravia, Vienna and Prague; journalist (1866-??), CZ (b. 1866) |
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| františek kusák CZ (b. 1879) |
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| františek kusák CZ (b. 1891) |
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| dalibor kusák (born 1917), CZ (b. 1917) |
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| vlastimil kusák CZ (b. 1919) |
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| josef kusák (b. 1930) |
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| františek kusák (b. 1934) |
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| ladislav kusák (b. 1938) |
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| jan kusák CZ (b. 1940) |
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| lubomír kusák CZ (b. 1946) |
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| pavel kusák (b. 1947) |
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jan kusák gymnast, CZ |
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| antonín kusák CZ (b. 1950) |
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| alexej kusák (b. 1952) |
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| pavel kusák CZ (b. 1957) |
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