Family name Kršák (Kršák 
) , globally, is a very rare cognomen. The cognomen Kršák is characteristic of Eastern Europe, particularly Slovakia, where it is quite a rare surname, and Czechia, where it is a rare surname.
| ján kršák SK (b. 1844) |
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| imrich kršák Slovakian Righteous Among the Nations, SK (b. 1901) |
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| michael kršák Czech soccer player, CZ (b. 1991) |
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