Family name Платонов (Платонов 
, Platonov 
) , all around the world, is a common cognomen. The surname Платонов is characteristic of Eastern Europe, particularly Russia, where it is quite a common surname, Belarus, and Moldova, where it is quite a rare surname. Not in comparison with a country's population, it most frequently occurs in Eastern Europe, particularly Russia, Ukraine, and Belarus.
| VARIANT | COUNTRY |
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| Платонов | Kazakhstan, Belarus, Azerbaijan, Russia, Ukraine |
| Platonov | Moldova, Israel, Estonia, Russia, Czechia |
| симеон яковлевич платонов RU (b. 1781) |
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харитон платонович платонов Russian painter (1842-1907), UA (b. 1842) |
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платонов, флорентий николаевич RU (b. 1839) |
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сергей фёдорович платонов Russian historian, RU (b. 1860) |
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| никита платонов RU (b. 1800) |
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| ипполит михайлович богословский-платонов RU (b. 1821) |
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| пётр платонов RU (b. 1823) |
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андрей платонович платонов Russian writer, RU (b. 1899) |
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николай фёдорович платонов RU (b. 1889) |
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платонов, борис викторович BY (b. 1903) |
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платонов, василий романович RU (b. 1923) |
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платонов, игорь владимирович Soviet chess player (1934-1994), UA (b. 1934) |
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| платонов, константин иванович UA (b. 1877) |
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платонов, лев васильевич Russian footballer, RU (b. 1940) |
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платонов, владимир николаевич Soviet and Ukrainian scientist in the field of sports science, UA (b. 1941) |
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