Cognomen Pienkowski (Pienkowski 
) , in the entire world, is quite a rare family name. The cognomen Pienkowski is habitual in Poland, where it is quite a rare surname, Estonia, and Slovakia, where it is a rare surname. In absolute terms, it is the most numerous in Poland, the United States, and Germany. Also, Pienkowski is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Pienkowski | Germany, Romania, United States, Poland, France |
| zbigniew pienkowski (b. 1926) |
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| thomas pienkowski researcher |
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| victor murcia pienkowski researcher ORCID ID = 0000-0002-1383-8019 |
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| catherine pienkowski researcher |
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| arthur pienkowski researcher (ORCID 0000-0003-2215-5452) |
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| joni pienkowski |
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| stanley pienkowski |
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