Cognomen Marušák (Marušák 
) , all over the world, is a rare family name. The last name Marušák is habitual in Eastern Europe, particularly Czechia, where it is a rare surname, and Slovakia.
| VARIANT | COUNTRY |
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| Marušák | Czechia, Slovakia |
| karel marušák Czechoslovak senator of Czechoslovak National Parliament, Czechoslovak politician, engineer, local politician, political prisoner and regional politician, CZ (b. 1884) |
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| františek marušák SK (b. 1909) |
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| bohumil marušák (b. 1925) |
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| jiří marušák Czech ice hockey player, CZ (b. 1975) |
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| lubomír marušák CZ (b. 1992) |
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