Family name Jończyk (Jończyk 
) , throughout the world, is quite a rare cognomen. The cognomen Jończyk is habitual in Poland, where it is quite a rare surname, and the United Kingdom, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Jończyk | Poland, United Kingdom, United States |
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leon jończyk PL (b. 1934) |
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| kazimiera jończyk Polish Righteous Among the Nations, PL (b. 1925) |
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| julian jończyk Polish sculptor (1930-2007), PL (b. 1930) |
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| jan jończyk Polish jurist, PL (b. 1930) |
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piotr jończyk PL (b. 1980) |
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| jerzy jończyk Polish actor, PL (b. 1943) |
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| andrzej jończyk PL (b. 1938) |
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| robert jończyk PL (b. 1967) |
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| rafał jończyk researcher |
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| agnieszka jończyk researcher, PL |
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| jakub jończyk Polish pharmaceutical chemist and researcher, PL |
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| barbara jończyk Ph.D. Politechnika Łódzka 1975, PL |
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| maciej jończyk researcher, PL (b. 1983) |
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Ada, Darek, Dawid, Gosia, Janek, Jacek, Jarek, Jakub, Jerzy, Julia, Jurek, Tomek, Edyta, Hanna, Filip, Iwona, Marcin, Maciej, Monika, Sandra, Sabina, Sylwia, Rafał, Radek, Piotr, Paweł, Aga, Jan, Ela, Ewa, Ola, Anna, Ania, Adam, Kuba, Zuza, Szymon, Marta, Magda, Alina, Aneta, Artur, Agata, Basia, Beata, Karol, Kamil, Kasia, Marek, and Adrian