Last name Семенюк (Semeniuk 
, Семенюк 
, Semenyuk 
) , in the world, is a common family name. The surname Семенюк is characteristic of Ukraine, where it is quite a common surname, Belarus, and Estonia, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Eastern Europe, particularly Ukraine, Russia, and Belarus. Very seldom, Семенюк is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Semeniuk | Poland, Canada, Russia, Argentina, United States |
| Семенюк | Ukraine, Belarus, Russia, Kyrgyzstan, Kazakhstan |
| Semenyuk | Poland, Canada, Russia, Germany, United States |
| Semenjuk | Ukraine, Estonia, Canada, Germany, United States |
Semeniouk, and Siemieniuk
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семенюк, дорофей исидорович UA (b. 1885) |
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| семенюк іван UA (b. 1867) |
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семенюк, иван иванович BY (b. 1917) |
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владимир онуфриевич семенюк Soviet Russian choir director, RU (b. 1937) |
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| семенюк, лукаш BY (b. 1880) |
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| семенюк осип UA (b. 1883) |
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семенюк, виктор фёдорович RU (b. 1940) |
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олег анатольевич семенюк Ukrainian linguist, UA (b. 1964) |
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| афанасий фомич семенюк BY (b. 1904) |
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| семенюк, лидия лукинична Soviet architect (1918-2001), UA (b. 1918) |
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| семенюк, захар владимирович UA (b. 1919) |
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| семенюк никон юхимович UA (b. 1919) |
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| степан семенюк UA (b. 1920) |
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| семенюк, владимир владимирович chess player, RU (b. 1935) |
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виктор семенюк Wikimedian, UA (b. 1986) |
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