Last name Bartosz (Bartosz 
, Бартош 
, ברטוש 
) , globally, is a common cognomen. The cognomen Bartosz is habitual in Eastern Europe, particularly Poland, where it is quite a common surname, Belarus, and Ukraine, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Eastern Europe, particularly Poland, Ukraine, and Russia. More frequently, Bartosz is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Bartosz | Ireland, United States, United Kingdom, Germany, Poland |
| Бартош | Kazakhstan, Kyrgyzstan, Ukraine, Belarus, Russia |
| ברטוש | Israel |
| Барташ | Kazakhstan, Ukraine, Belarus, Russia |
Bartoch, Bartoszewicz, and Бартосз
| danuta bartosz PL (b. 1932) |
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| julian bartosz (b. 1934) |
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| andrzej bartosz Polish journalist, PL (b. 1948) |
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| grzegorz bartosz researcher, PL (b. 1950) |
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| ryszard bartosz Polish politician and deputy, PL (b. 1953) |
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| waldemar bartosz Polish politician and deputy, PL (b. 1954) |
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| joanna bartosz Polish gymnast, PL (b. 1954) |
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| adam bartosz PL (b. 1947) |
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| bogna bartosz (b. 1962) |
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| albert bartosz PL (b. 1969) |
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| bogna bartosz Polish singer, PL |
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| curtis bartosz researcher |
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| mateusz bartosz basketball player (1987-), PL (b. 1987) |
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| andy bartosz |
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| marcin bartosz |
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Ski, Kaczmarek, Kowalczyk, Dąbrowski, Grabowski, Głowacki, Jankowski, Jabłoński, Olszewski, Ostrowski, Kamiński, Wieczorek, Kozłowski, Piotrowski, Jakubowski, Nowakowski, Chmielewski, Kwiatkowski, Lewandowski, Tomaszewski, Wiśniewski, Malinowski, Borkowski, Szymański, Michalski, Mazur, Baran, Król, Dudek, Nowak, Owski, Sikora, Pawlak, Nowicki, Wójcik, Majewski, Michalak, Stępień, Borowski, Kowalski, Krawczyk, Jaworski, Woźniak, Zawadzki, Zieliński, Marciniak, Wróblewski, and Wojciechowski