Family name Pietkun (Pietkun 
) , globally, is a rare cognomen. The cognomen Pietkun is habitual in Slovenia, where it is quite a rare surname, Lithuania, and Poland, where it is a rare surname. Also, Pietkun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pietkun | Poland, Lithuania, United States, Slovenia, Germany |
| witold pietkun (b. 1911) |
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| radosław pietkun Polish mathematician |
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| jan pietkun Polish Righteous Among the Nations, PL |
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