Family name Gruszka (Gruszka 
, Грушка 
) , globally, is a common cognomen. The family name Gruszka is habitual in Poland, where it is quite a common surname, Ukraine, where it is quite a rare surname, and Germany, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Poland, Ukraine, and the United States. Also, Gruszka is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Gruszka | Germany, France, Poland, United Kingdom, United States |
| Грушка | Kazakhstan, Russia, Ukraine, Belarus |
| jan gruszka UA (b. 1810) |
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bruno stanisław gruszka politician, PL (b. 1881) |
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józef gruszka Officer of the Polish Army, PL (b. 1890) |
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franciszek gruszka Polish Air Force officer, PL (b. 1910) |
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| józef gruszka PL (b. 1889) |
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| sylwester gruszka PL (b. 1891) |
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| jan gruszka (1907-1980) (b. 1907) |
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| anthony gruszka American politician, US (b. 1910) |
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tadeusz gruszka politician, PL (b. 1961) |
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stanisław gruszka Soldier, Polish skydiver, PL (b. 1964) |
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edward gruszka PL (b. 1957) |
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| michał gruszka (b. 1911) |
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piotr gruszka former Polish volleyball player, coach, PL (b. 1977) |
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karolina gruszka Polish actress, PL (b. 1980) |
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| mieczysław gruszka Polish association football player, PL (b. 1933) |
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