Last name Козловский (Козловский 
, Koslowski 
, Kozłowski 
, and others...) , globally, is a common surname. The cognomen Козловский is characteristic of Belarus, where it is quite a common surname, Poland, and Lithuania. In absolute terms, it is the most numerous in Eastern Europe, particularly Poland, Russia, and Belarus.
| VARIANT | COUNTRY |
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| Козловский | Kyrgyzstan, Kazakhstan, Belarus, Ukraine, Russia |
| Koslowski | Brazil, United States, Germany, Poland, France |
| Kozłowski | United States, Germany, Lithuania, Poland, France |
| Kozlovsky | Brazil, Belarus, Russia, United States, Germany |
| Kozlovskiy | Belarus, Russia, United States, Germany, Poland |
| Kozlovski | Brazil, Belarus, United States, Germany, Poland |
| Kozlovskii | Canada, Belarus, Russia, United States, Australia |
| Kozlovskij | Belarus, Russia, United States, Germany, Lithuania |
Kazlouski, Kozlovský, Kozlowski, Kozlowskii, Казлоўскі, Козловський, and קוזלובסקי
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михаил иванович козловский Russian sculptor (1753-1802), RU (b. 1753) |
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пётр борисович козловский Russian noble, RU (b. 1783) |
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козловский, симон мартин RU (b. 1819) |
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владислав козловский Polish philosopher, UA (b. 1832) |
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| игнацы козловскийй Polish pianist and composer, UA (b. 1786) |
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| козловский, николай ильич Russian architect (1791-1879), RU (b. 1791) |
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козловский, мечислав юльевич Polish lawyer (1876-1927), RU (b. 1876) |
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иван семёнович козловский Ukrainian soviet singer (1900-1993), RU (b. 1900) |
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| козловский, игнат игнатьевич BY (b. 1846) |
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| козловский, владимир иванович Russian impressionist painter, UA (b. 1867) |
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| козловский, иван павлович RU (b. 1869) |
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козловский, евгений александрович Russian geologist, RU (b. 1929) |
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| козловский, давид евстафьевич RU (b. 1870) |
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| юзеф козловскийй Polish officer (1892-1940), UA (b. 1892) |
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козловский, александр александрович Russian politician, RU (b. 1944) |
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Ян, Жека, Олег, Илья, Иван, Егор, Саша, Стас, Рома, Януш, Яков, Эдик, Іван, Юрий, Фёдор, Костя, Марат, Мирон, Антон, Артем, Леон, Артур, Влад, Витёк, Аик, Лев, Юра, Коля, Макс, Марк, Миша, Адам, Гоша, Гена, Глеб, Паша, Петр, Пётр, Даня, Дима, Ваня, Вася, Витя, Вова, and Артём