Surname Próchnicki (Próchnicki 
) , in the entire world, is a rare family name. The cognomen Próchnicki is habitual in Eastern Europe, particularly Poland, where it is a rare surname.
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| Próchnicki | Poland |
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stanisław próchnicki Officer of the Polish Army (1893-1933), PL (b. 1893) |
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| zdzisław próchnicki UA (b. 1875) |
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| jerzy próchnicki Polish actor, PL (b. 1930) |
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| maciej stanisław próchnicki Polish musician, PL (b. 1961) |
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| michał próchnicki researcher (ORCID 0000-0001-8993-9767) |
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| mikołaj próchnicki Roman Catholic bishop |
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