Cognomen Lašák (Lašák 
, Лашак 
) , worldwide, is a rare family name. The last name Lašák is habitual in Eastern Europe, particularly Slovakia, where it is quite a rare surname, Czechia, where it is a rare surname, and Russia, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Lašák | Czechia, Slovakia |
| Лашак | Russia, Ukraine |
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ján lašák Slovak extraleague ice hockey player, ice hockey goalkeeper, and Olympic athlete, SK (b. 1979) |
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| pavel lašák CZ (b. 1954) |
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| radomír lašák CZ (b. 1965) |
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| petr lašák |
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| tomáš lašák CZ (b. 1991) |
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