Cognomen Крючков (Крючков 
, Kryuchkov 
, Krioutchkov 
, among others...) , worldwide, is a common surname. The surname Крючков is characteristic of Eastern Europe, particularly Russia, where it is quite a common surname, Belarus, and Ukraine, where it is quite a rare surname.
| VARIANT | COUNTRY |
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| Крючков | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Kryuchkov | Uzbekistan, Russia, Bulgaria, United States, Lithuania |
| Krioutchkov | Canada, Spain, United Kingdom, United States |
| Kriuchkov | Russia, United States, Greece, Ukraine, Lithuania |
| Krjutschkow | Germany, Australia |
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крючков, ксенофонт никифорович RU (b. 1842) |
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крючков, пётр петрович Soviet author and secretary of Maxim Gorki, RU (b. 1889) |
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крючков, дмитрий александрович RU (b. 1887) |
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крючков, николай афанасьевич Soviet and Russian actor, RU (b. 1910) |
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владимир александрович крючков Soviet politician, chairman of KGB (1924-2007), RU (b. 1924) |
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георгій корнійович крючков Ukrainian politician, UA (b. 1929) |
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крючков, всеволод григорьевич RU (b. 1925) |
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| дмитрий крючков Russian writer, RU (b. 1887) |
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| крючков, андрей ильич RU (b. 1901) |
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| крючков, сергей петрович RU (b. 1907) |
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| абрам иванович крючков RU (b. 1910) |
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| крючков, василий егорович Hero of the Soviet Union, RU (b. 1921) |
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| крючков, иван константинович RU (b. 1912) |
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| крючков, фёдор антонович RU (b. 1913) |
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крючков, дмитрий васильевич politician, UA (b. 1978) |
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