Cognomen Бортник (Bortnik 
, Bortnyk 
, Бортник 
) , all over the world, is quite a common last name. The surname Бортник is habitual in Belarus, where it is quite a common surname, Ukraine, where it is quite a rare surname, and Estonia. Measured by absolute frequency, it is the most numerous in Eastern Europe, particularly Ukraine, Russia, and Belarus. Much less frequently, Бортник is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Bortnik | Argentina, Belarus, United States, Poland, Israel |
| Bortnyk | Brazil, Argentina, United States, Germany, Poland |
| Бортник | Kyrgyzstan, Kazakhstan, Belarus, Russia, Ukraine |
| Bortnyik | Germany, Hungary, United States, Romania |
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бортник роман Hero of the Soviet Union, UA (b. 1908) |
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бортник, владимир фёдорович Soviet and Ukrainian politician, UA (b. 1949) |
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| бортник яків каленикович UA (b. 1895) |
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| януарій дем’янович бортник UA (b. 1897) |
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бортник, михаил михайлович KZ (b. 1960) |
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| бортник федір каленикович UA (b. 1911) |
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| бортник, иван михайлович RU (b. 1940) |
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| александр иванович бортник MD (b. 1959) |
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| сергій юрійович бортник UA (b. 1961) |
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| бортник олександр миколайович UA (b. 1967) |
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| игорь александрович бортник Belarusian scientist, BY (b. 1978) |
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| бортник, максим евгеньевич director, UA (b. 1987) |
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| павел бортник Russian footballer, RU (b. 1988) |
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| богдан витальевич бортник association football player, UA (b. 1992) |
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Ян, Влад, Віта, Віра, Леся, Лука, Ліна, Ліля, Люба, Лєна, Олег, Илья, Инна, Иван, Емма, Саша, Рома, Яків, Яков, Яким, Ілля, Іван, Вера, Інга, Ніна, Неля, Мая, Зоя, Лев, Оля, Яна, Юля, Єва, Кіра, Майя, Марк, Мина, Алла, Анна, Адам, Бася, Глеб, Петр, Дана, Дар'Я, Дина, Діна, Нина, and Інна