Family name Gorniak (Gorniak 
, Гурняк 
) , across the world, is quite a common surname. The surname Gorniak is characteristic of Poland, where it is quite a rare surname, Ukraine, and Israel, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Poland, Ukraine, and the United States.
| jan gorniak (b. 1887) |
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| hermann gorniak (b. 1927) |
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| yuri yurievich gorniak (b. 1939) |
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| peter john gorniak Ph.D. Massachusetts Institute of Technology 2005 |
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| stacey l gorniak researcher ORCID ID = 0000-0002-8192-850X |
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| richard gorniak researcher |
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| thomas gorniak (b. 1980) |
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| laura gorniak Belgian footballer, BE (b. 1998) |
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