Family name Karpiak (Karpiak 
, Карпяк 
) , around the world, is quite a rare surname. The cognomen Karpiak is habitual in Eastern Europe, particularly Ukraine, where it is quite a rare surname, Poland, where it is a rare surname, and Russia. Likewise, Karpiak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Karpiak | Hungary, Canada, United States, Israel, Poland |
| Карпяк | Belarus, Russia, Kazakhstan, Ukraine |
| stephen karpiak American medical researcher, US (b. 1947) |
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| pauline maud karpiak Peerage person ID=429012 |
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