Cognomen Желязков (Zhelyazkov 
, Желязков 
, Zheljazkov, along with others...) , all around the world, is a common family name. The last name Желязков is habitual in Bulgaria, where it is a common surname, Cyprus, where it is quite a rare surname, and North Macedonia, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Bulgaria, Ukraine, and Afghanistan.
| VARIANT | COUNTRY |
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| Zhelyazkov | Bulgaria, Greece, Afghanistan, United States, United Kingdom |
| Желязков | Ukraine, Russia, Bulgaria |
| Jeliazkov | Algeria, Bulgaria, France, United States, United Kingdom |
| Zheliazkov | Bulgaria, Canada, United States, United Kingdom, Denmark |
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добри желязков Bulgarian businessman, BG (b. 1800) |
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| младен желязков BG (b. 1838) |
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| господин желязков BG (b. 1873) |
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| павел желязков BG (b. 1881) |
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андрей желязков Bulgarian footballer, BG (b. 1952) |
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желязко желязков Bulgarian association football player (1957-), BG (b. 1957) |
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| димитър желязков BG (b. 1899) |
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| любен желязков actor, BG (b. 1912) |
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николай желязков volleyball player, BG (b. 1970) |
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| желязко желязков BG (b. 1926) |
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жани желязков Bulgarian volleyball player, BG (b. 1992) |
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| христо желязков BG (b. 1934) |
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| здравко желязков Bulgarian singer, BG (b. 1953) |
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| николай желязков association football player (1971-), BG (b. 1971) |
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| борис желязков Bulgarian mixed martial artist, BG (b. 1971) |
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Г-Н, Антон, Артем, Галин, Павло, Петро, Петко, Дарин, Демир, Денис, Дилян, Вадим, Васил, Живко, Ивайло, Семен, Стоил, Стоян, Тодор, Роман, Рости, Федір, Ангел, Євген, Милен, Макси, Иво, Ицо, Колю, Гого, Петр, Деян, Димо, Диян, Жеко, Олег, Иван, Емил, Егор, Іван, Ігор, Юрій, Єгор, Петър, Калин, Костя, Кирил, Марин, and Калоян