Family name Кондратьев (Кондратьев 
, Kondratjew 
, Kondratyev 
, among others...) , all around the world, is a common cognomen. The family name Кондратьев is characteristic of Russia, where it is quite a common surname, Belarus, and Kazakhstan, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Кондратьев | Kyrgyzstan, Russia, Belarus, Kazakhstan, Ukraine |
| Kondratjew | Poland, Germany |
| Kondratiev, Kondratyev | Germany, Russia, Belarus, United States, Poland |
| Kondratev | Germany, Russia, Canada, Ukraine, United States |
| Kondrat'Ev | Bulgaria, Belarus, Russia |
Kondratjev, and Кондратов
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кондратьев, иван кузьмич Russian writer (1849-1904), BY (b. 1849) |
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| кондратьев, иван васильевич Russian local historian (1803-1850), RU (b. 1803) |
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| кондратьев, василий петрович UA (b. 1810) |
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николай дмитриевич кондратьев Russian economist (1892-1938), RU (b. 1892) |
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| сергей петрович кондратьев Russian philologist, UA (b. 1872) |
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| кондратьев, михаил николаевич Russian architect (1879-1943), RU (b. 1879) |
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кондратьев, алексей александрович Russian local historian, RU (b. 1930) |
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фёдор викторович кондратьев Russian psychiatrist, RU (b. 1933) |
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кондратьев, павел евсеевич RU (b. 1924) |
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| кондратьев, георгий михайлович Soviet physicist, RU (b. 1887) |
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| кондратьев, сергей александрович Soviet conductor, composer and musicologist (1896-1970), RU (b. 1896) |
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кондратьев, владимир петрович Soviet journalist, RU (b. 1947) |
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кондратьев, ярослав юрьевич Soviet jurist (1948-2005), UA (b. 1948) |
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| кондратьев, леонтий васильевич UA (b. 1892) |
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| виктор николаевич кондратьев Soviet chemist (1902-1979), RU (b. 1902) |
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