Cognomen Зайченко (Зайченко 
, Zaichenko 
, Saitschenko 
) , worldwide, is a common family name. The last name Зайченко is habitual in Eastern Europe, particularly Ukraine, where it is quite a common surname, Belarus, where it is quite a rare surname, and Russia.
| VARIANT | COUNTRY |
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| Зайченко | Kazakhstan, Ukraine, Kyrgyzstan, Belarus, Russia |
| Zaychenko, Zaichenko | Bulgaria, Ukraine, Belarus, United States, Russia |
| Saitschenko | Brazil, United States |
Zaichanka, Zaitchenko, Zajchenko, Заіченко, and Заїченко
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зайченко, юрий петрович UA (b. 1942) |
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| зайченко, илья леонтиевич UA (b. 1896) |
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| зайченко, георгий васильевич Soviet politician (1915-2004), UA (b. 1915) |
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| пётр зайченко Russian actor, RU (b. 1943) |
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| зайченко, юрий владимирович Soviet association football player, UA (b. 1973) |
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| зайченко руслан петрович UA (b. 1963) |
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| зайченко олександр михайлович Ukrainian military personnel, UA (b. 1975) |
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| андрей зайченко Russian poker player, RU (b. 1978) |
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| зайченко андрій вікторович Ukrainian military personnel, UA |
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| дарья зайченко chess player, RU (b. 1991) |
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Ян, Дана, Дар'Я, Даша, Дора, Дима, Діна, Неля, Нина, Ніка, Ніна, Ніла, Варя, Вера, Влад, Віта, Віра, Зоня, Зося, Лада, Лена, Леся, Петр, Ліна, Гліб, Гайя, Ія, Аня, Аза, Ася, Зоя, Лев, Оля, Ира, Тая, Яна, Іда, Юра, Єва, Катя, Коля, Кіра, Майя, Марк, Миша, Алла, Анна, Глеб, and Люба