Family name Pietrek (Pietrek 
) , all over the world, is quite a rare surname. The last name Pietrek is characteristic of Poland, where it is quite a rare surname, Germany, and Switzerland, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in Germany, Poland, and the United States. Likewise, Pietrek is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Pietrek | Germany, Argentina, Poland, United Kingdom, United States |
| winfried pietrek PL (b. 1932) |
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| henryk pietrek Polish association football player, PL (b. 1942) |
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| matt pietrek American blogger, US (b. 1966) |
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| daniel pietrek Geb. 1976, Prof. nadzw. (außerordentliche Professur) seit 2017, Habilitation 2013, Opole, Polen (b. 1976) |
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| anja-nadin pietrek German volleyball player, DE (b. 1979) |
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| torsten pietrek (b. 1971) |
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| kira pietrek PL (b. 1983) |
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