Surname Фадеев (Фадеев 
, Fadeev 
, Fadeyev 
, among others...) , globally, is a common last name. The cognomen Фадеев is habitual in Russia, where it is quite a common surname, Belarus, and Estonia, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Russia, Kazakhstan, and Belarus.
| VARIANT | COUNTRY |
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| Фадеев | Kazakhstan, Belarus, Kyrgyzstan, Uzbekistan, Russia |
| Fadeev | Germany, Belarus, Estonia, Israel, Russia |
| Fadeyev | Kazakhstan, Australia, Ukraine, United States, Russia |
| Fadejev | United Kingdom, Germany, Estonia, Latvia, United States |
| Fadejew | Germany, United States |
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андрей михайлович фадеев (1789-1867), RU (b. 1789) |
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ростислав фадеев Russian military historian, journalist and military personnel (1824-1883), UA (b. 1824) |
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александр иванович фадеев RU (b. 1857) |
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александр фадеев Soviet writer and politician (1901-1956), RU (b. 1901) |
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фадеев, иван иванович RU (b. 1920) |
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леонид фадеев Russian biophysicist, RU (b. 1944) |
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геннадий матвеевич фадеев RU (b. 1937) |
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| фадеев, иван иванович minister of finance of the RSFSR, RU (b. 1906) |
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| фадеев, иван иванович RU (b. 1898) |
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| фадеев, яков семёнович RU (b. 1899) |
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валерий александрович фадеев Soviet journalist, RU (b. 1960) |
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| фадеев, василий семёнович RU (b. 1900) |
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| фадеев, владимир георгиевич RU (b. 1904) |
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александр фадеев Soviet and Russian figure skater, RU (b. 1964) |
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| фадеев, сергей максимович RU (b. 1905) |
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