Cognomen Кузнецов (Кузнецов 
, Kuznetsov 
, Kouznetsov 
, among others...) , in the world, is a widespread last name. The last name Кузнецов is characteristic of Russia, where it is a common surname, Belarus, where it is quite a common surname, and Kazakhstan (explore the name in all countries). In absolute terms, it is the most numerous in Russia, Ukraine, and Kazakhstan.
| VARIANT | COUNTRY |
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| Кузнецов | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Kuznetsov | Uzbekistan, Estonia, Russia, Israel, United States |
| Kouznetsov | Estonia, Russia, Israel, United States, Germany |
| Kusnezow | Russia, Switzerland, France, Australia, Germany |
| Kuznecov | Uzbekistan, Russia, Israel, United States, Germany |
Cuznețov, Koeznetsov, Kuzneczov, Kuznetcov, Kuznyecov, Kuznyetsov, Kuzněcov, and Quznetsov
| устинья кузнецова KZ (b. 1757) |
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| кузнецов, яков васильевич RU (b. 1761) |
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| кузнецов, ефим андреевич RU (b. 1783) |
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кузнецов, александр харитонович UA (b. 1838) |
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кузнецов, николай дмитриевич russian painter (1850-1929), UA (b. 1850) |
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| кузнецов, михаил михайлович RU (b. 1791) |
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| кузнецов, иван кириллович RU (b. 1793) |
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кузнецов, матвей сидорович RU (b. 1846) |
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кузнецов иван павлович RU (b. 1850) |
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кузнецов, корнилий тимофеевич RU (b. 1852) |
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кузнецов, константин павлович Russian artist (1863-1936), RU (b. 1863) |
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николай иванович кузнецов Russian botanist (1864-1932), RU (b. 1864) |
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кузнецов, иван осипович politician, RU (b. 1867) |
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кузнецов, иван сергеевич Russian architect (1867-1942), RU (b. 1867) |
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александр николаевич кузнецов RU (b. 1861) |
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