Cognomen Демидов (Demidow 
, Демидов 
, Demidov 
, among others...) , throughout the world, is a common family name. The last name Демидов is habitual in Russia, where it is quite a common surname, Belarus, and Kazakhstan, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Eastern Europe, particularly Russia, Belarus, and Ukraine.
| VARIANT | COUNTRY |
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| Demidow | Germany, Russia, Canada, United States, Poland |
| Демидов | Kyrgyzstan, Russia, Belarus, Kazakhstan, Ukraine |
| Demidov | Bosnia and Herzegovina, Russia, Serbia, Romania, Uzbekistan |
| Demidoff | France, Russia, United States, Israel, Brazil |
| Demydov | France, Estonia, Chile, Ukraine, United States |
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никита демидов Russian businessman (1656-1725), RU (b. 1656) |
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акинфий демидов Russian businessman, RU (b. 1678) |
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демидов, прокофий акинфиевич Russian businessman, RU (b. 1709) |
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демидов, григорий акинфиевич botanist (1715-1761), RU (b. 1715) |
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никита акинфиевич демидов Russian businessman, RU (b. 1724) |
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демидов, александр григорьевич RU (b. 1737) |
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николай никитич демидов Russian businessman and arts patron, RU (b. 1773) |
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демидов, павел николаевич Russian nobleman (1798-1840), RU (b. 1798) |
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демидов, пётр григорьевич Russian nobleman, RU (b. 1807) |
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демидов, павел григорьевич Peerage person ID=716427, RU (b. 1809) |
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| демидов, алексей иванович RU (b. 1754) |
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григорий александрович демидов RU (b. 1837) |
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демидов, михаил денисович RU (b. 1842) |
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анатолий павлович демидов (1874-1941), IT (b. 1874) |
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демидов, николай васильевич Russian theater director and teacher (1884-1953), RU (b. 1884) |
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