Surname Matusiak (Matusiak 
, Матусяк 
) , all over the world, is a common last name. The cognomen Matusiak is habitual in Poland, where it is quite a common surname, Ukraine, where it is a rare surname, and Austria. Measured by absolute frequency, it is the most numerous in Poland, the United States, and Ukraine. More prevalently, Matusiak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Matusiak | Germany, France, United States, United Kingdom, Poland |
| Матусяк | Ukraine, Russia, Kazakhstan |
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klemens matusiak PL (b. 1881) |
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stefan matusiak PL (b. 1892) |
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alicja matusiakówna Polish actress, PL (b. 1909) |
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| szymon matusiak PL (b. 1854) |
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wojciech matusiak cyclist, PL (b. 1945) |
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kazimierz matusiak PL (b. 1942) |
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ryszard matusiak Polish politician and deputy, PL (b. 1953) |
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grzegorz matusiak Polish politician and deputy, PL (b. 1961) |
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andrzej matusiak (b. 1956) |
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barbara matusiak PL (b. 1958) |
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| feliks matusiak PL (b. 1910) |
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| tadeusz matusiak PL (b. 1912) |
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rafał matusiak Polish sportsperson, PL (b. 1980) |
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| stanisław matusiak PL (b. 1922) |
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anna matusiak Polish journalist, PL (b. 1984) |
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