Family name Platonov (Платонов 
, Platonov 
, פלטונוב ) , in the world, is a common cognomen. The last name Platonov is characteristic of Eastern Europe, particularly Russia, where it is quite a common surname, Belarus, and Moldova, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Eastern Europe, particularly Russia, Ukraine, and Belarus.
| VARIANT | COUNTRY |
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| Платонов | Azerbaijan, Russia, Kazakhstan, Ukraine, Belarus |
| Platonov | Israel, Moldova, Russia, Estonia, Czechia |
| פלטונוב | Israel |
Klimentov, Platonow, Płatonow, and Платонович
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yuriy platonov Moldovan politician (b. 1948) |
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| iuri platonov MD (b. 1948) |
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| s. platonov (b. 1949) |
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| mikhail mikhajlovich platonov RU (b. 1950) |
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| evgeny platonov chess player (b. 1969) |
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| artem platonov researcher |
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| fedor platonov researcher |
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| alexei v. platonov researcher |
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| pyotr g platonov researcher |
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| alexander platonov researcher |
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| maxim o. platonov researcher |
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| dmitry platonov researcher |
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| evgenij viktorovič platonov RU (b. 1977) |
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| vladimir georgievič platonov RU |
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| anatoly platonov |
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Mr, Erik, Enot, Egor, Vova, Vlad, Inna, Ilia, Ilya, Ivan, Eleh, Igor, Olea, Oleg, Oleh, Yuri, Yura, Yury, Zoya, Marat, Maxim, Olga, Nelu, Nick, Juri, Ms, Max, Ari, Dan, Day, Lev, Ion, Mark, Maya, Maks, Shay, Stas, Alex, Anah, Petr, Roma, Dina, Dima, Gleb, Lior, John, Sasha, and Serge