Family name Белецкий (Bielecki 
, Белецкий 
, Beletsky 
, among others...) , worldwide, is a common surname. The cognomen Белецкий is habitual in Eastern Europe, particularly Poland, where it is quite a common surname, Belarus, where it is quite a rare surname, and Russia. Not in comparison with a country's population, it is the most numerous in Poland, Russia, and the United States. Also, Белецкий is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Bielecki | Poland, France, United States, Germany, Russia |
| Белецкий | Kazakhstan, Belarus, Kyrgyzstan, Russia, Ukraine |
| Beletsky | Israel, Canada, United States, Germany, Russia |
| Beletskii | Russia, Ukraine, Kazakhstan, Belarus |
| Beletskiy | Germany, Russia, United States, Ukraine |
| Beleckij | Germany, Lithuania |
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евгений николаевич белецкий UA (b. 1870) |
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белецкий, степан петрович UA (b. 1873) |
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| белецкий, николай федорович UA (b. 1851) |
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| белецкий, павел кузьмич RU (b. 1871) |
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| белецкий, александр иванович literary scholar (1884-1961), UA (b. 1884) |
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белецкий, аркадий ефимович UA (b. 1925) |
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белецкий феликс марьянович UA (b. 1927) |
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белецкий, сергей васильевич Russian historian, RU (b. 1953) |
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| белецкий, евгений михайлович Soviet general (1905-1984), RU (b. 1905) |
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| белецкий, вячеслав константинович RU (b. 1895) |
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| белецкий, георгий николаевич RU (b. 1901) |
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| белецкий, зиновий яковлевич RU (b. 1901) |
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| белецкий, василий георгиевич BY (b. 1902) |
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| белецкий, иван викторович UA (b. 1902) |
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| белецкий, антон федосеевич UA (b. 1908) |
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Ян, Антон, Артем, Артур, Артём, Борис, Павел, Данил, Денис, Вадим, Вован, Захар, Игорь, Иоанн, Иосиф, Семен, Роман, Федор, Эдгар, Здуард, Кирилл, Максим, Алекс, Матвей, Кирил, Юрий, Лев, Юра, Коля, Макс, Марк, Миша, Паша, Петр, Пётр, Дима, Ваня, Вася, Вова, Влад, Олег, Илья, Иван, Егор, Саша, Стас, Яков, Костя, and Микола