Last name Довгань (Dowhan 
, Dovgan 
, Довгань 
, along with others...) , in all the world, is a common cognomen. The surname Довгань is habitual in Ukraine, where it is quite a common surname, Slovenia, where it is quite a rare surname, and Kazakhstan. In absolute terms, it is the most numerous in Ukraine, Russia, and Kazakhstan. Very seldom, Довгань is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dowhan | Canada, Argentina, Poland, United States, South Korea |
| Dovgan | Canada, Poland, United States, Russia, Slovenia |
| Довгань | Ukraine, Kazakhstan, Belarus, Russia, Kyrgyzstan |
| Dowgan | Brazil, India, Canada |
| Dovhan | Canada, Italy, Poland, United States, Russia |
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довгань, вячеслав георгиевич Soviet and Russian general and military scientist, RU (b. 1937) |
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довгань, борис степанович UA (b. 1928) |
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довгань, виталий алексеевич Soviet and Russian musician, RU (b. 1942) |
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довгань сергій васильович politician, UA (b. 1952) |
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довгань костянтин васильович politician, UA (b. 1954) |
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| константин андреевич довгань UA (b. 1902) |
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ілона леонідівна довгань Ukrainian journalist and TV anchor, UA (b. 1976) |
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| владимир захарович довгань Soviet film director and screenwriter (1929-2006), RU (b. 1929) |
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| оксана григорьевна довгань UA (b. 1938) |
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| людмила михайловна довгань Ukrainian artist, UA (b. 1951) |
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| микола анатолійович довгань Ukrainian rower, UA (b. 1955) |
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александра сергеевна довгань Russian pianist, RU |
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| ірина володимирівна довгань Ukrainian torture victim, UA (b. 1962) |
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| михаил васильевич довгань UA (b. 1953) |
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| владимир довгань RU (b. 1964) |
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Ія, Ваня, Вера, Вова, Влад, Віта, Віра, Лана, Лада, Леся, Лиза, Лора, Лука, Ліна, Ліда, Люба, Женя, Олег, Илья, Инна, Иван, Елла, Ніла, Ніна, Нина, Неля, Аня, Ден, Зоя, Оля, Яна, Іда, Єва, Клим, Макс, Майя, Емма, Марк, Анна, Адам, Глеб, Гліб, Гнат, Петр, Дар'Я, Дима, Діна, Діма, Алла, and Егор