Family name Piechowicz (Piechowicz 
) , all around the world, is quite a rare surname. The surname Piechowicz is habitual in Liechtenstein, where it is quite a rare surname, Poland, and Czechia, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Poland, the United States, and Czechia. More frequently, Piechowicz is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Piechowicz | Germany, Czechia, United Kingdom, United States, Poland |
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marek piechowicz basketball player (1988-), PL (b. 1988) |
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| krzysztof piechowicz (b. 1952) |
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| adam piechowicz Polish politician and deputy, PL (b. 1963) |
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| marian piechowicz Polish Righteous Among the Nations, PL |
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| lidia piechowicz researcher (ORCID 0000-0001-9222-7330) |
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| lucyna piechowicz Polish Righteous Among the Nations, PL |
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| joanna piechowicz researcher |
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| petr piechowicz (b. 1971) |
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| szymon piechowicz PL |
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| irena piechowicz BE |
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| marcin piechowicz basketball player (1993-), PL (b. 1993) |
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