Surname Onyshchenko (Onyshchenko 
, Онишченко 
, Онышченко ) , around the globe, is quite a rare cognomen. The cognomen Onyshchenko is characteristic of Russia, where it is a rare surname, Estonia, and Czechia. Not in comparison with a country's population, it is commonest in Eastern Europe, particularly Russia, Poland, and Ukraine. Much less frequently, Onyshchenko is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Onyshchenko | Italy, Spain, United States, Poland, Ukraine |
| Онишченко, Онышченко | Russia |
| אונישנקו | Israel |
Onischenko, Onischtschenko, Onishchenko, Onishenko, Oniščenko, Онищенко, and Оныщенко
| mykola i onyshchenko researcher |
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| anastasiia onyshchenko researcher (ORCID 0000-0001-7948-5925) |
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| viktor onyshchenko researcher |
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| iuliia onyshchenko researcher, ORCID id # 0000-0001-7449-4961 |
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| daria onyshchenko |
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Mr, Pavlo, Petro, Roman, Denys, Daria, Diana, Laura, Louri, Lydia, Julia, Tanya, Taras, Elena, Hanna, Helen, Vadym, Viola, Iryna, Orest, Olena, Yulia, Pavel, Katya, Cyril, Artem, Ms, Ron, Alex, Alla, Anna, Kate, Dina, Juli, Inna, Ivan, Yuriy, Igor, Olga, Oleg, Olha, Maria, Maxim, Misha, Sasha, Slava, Alina, Anton, Ihor, and Yurii