Cognomen Будник (Budnik 
, Будник 
, Budnyk 
) , around the world, is a common last name. The last name Будник is habitual in Eastern Europe, particularly Belarus, where it is quite a common surname, Ukraine, where it is quite a rare surname, and Poland. Not in comparison with a country's population, it is commonest in Eastern Europe, particularly Russia, Ukraine, and Belarus. Much less frequently, Будник is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Budnik | Germany, Belarus, Czechia, Poland, United States |
| Будник | Ukraine, Kazakhstan, Belarus, Russia, Kyrgyzstan |
| Budnyk | Canada, France, Czechia, United States, Afghanistan |
| Boudnik | Czechia, United States, Germany, Canada |
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будник, николай петрович Ukrainian musician (1953-2001), UA (b. 1953) |
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будник сергій іванович Ukrainian military personnel, UA (b. 1965) |
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| будник, василий сергеевич UA (b. 1913) |
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| будник, анна ивановна BY (b. 1922) |
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| будник, гавриил дмитриевич KZ (b. 1924) |
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| будник, лина васильевна actor (1939-2015), UA (b. 1939) |
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будник, евгений витальевич Ukrainian footballer, UA (b. 1990) |
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| будник богдан андрійович UA (b. 1941) |
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| будник, андрей сергеевич Russian diplomat (1953-2018), RU (b. 1953) |
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| будник, виктор николаевич Ukrainian association football player, UA (b. 1960) |
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| будник, елена михайловна Belarusian sprinter, BY (b. 1976) |
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Ян, Вере, Вера, Вова, Влад, Віта, Віра, Зося, Леся, Ліна, Люся, Женя, Олег, Осип, Илья, Инна, Иван, Емма, Егор, Саша, Тома, Тося, Ніла, Ніна, Нина, Неля, Зоя, Лев, Лия, Жан, Яна, Коля, Кіма, Майя, Маєр, Міра, Яніс, Алия, Алій, Анна, Адам, Глеб, Гліб, Петр, Пётр, Дар'Я, Дима, Діна, Алла, and Яків