Cognomen Bak (Bak 
, Back , 박 
, along with others...) , worldwide, is a prevalent family name. The surname Bak is characteristic of South Korea, where it is a prevalent surname, Denmark, where it is quite a common surname, and Luxembourg (explore the name in all countries). Not in comparison with a country's population, the name is most common in South Korea, Poland, and the United States. Very seldom, Bak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bak, Back | Brazil, Turkey, Poland, United States, Germany |
| 박 | South Korea |
| バク | Japan |
| 巴克 | China |
| باك | Saudi Arabia, Iraq, Egypt, Sudan, Iran |
| Бак | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
Babor, Bac, Bach, Backen, Backo, Bacoun, Baec, Bag, Baka, Bakany, Bakboord, Bake, Baker, Baki, Bakke, Bakken, Bakkie, Bakre, Baks, Bakull, Bark, Baķ, Bek, Bhaka, Bock, Bàk, Bák, Bâbord, Bâk, Bâķ, Bãk, Bãķ, Bó, Bāk, Bāķ, Băķ, Bąk, Bắk, Pak, Park, Phoh, Phác, Pu, Pǔ, Бакъ, Бек, Пак, Парк, באך, באק, פארק, بارك, باک, بيك, บัก, บัค, บั้ก, บั๊ก, พัก, បាក, បាក់, ប៉ាក, ប៉ាក់, パク, 博, 帕克, 朴, 樸, 百色, 芭克, and ﺑﺎﻙ
| bak don-ji Korean diplomat (b. 1342) |
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| bak hui-jung Korean diplomat (b. 1364) |
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| bak an-sin Korean diplomat (b. 1369) |
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| bak hirs HU (b. 1747) |
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| lars larsen bak (b. 1787) |
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| gwiin bak King Cheoljong's consort of Joseon (b. 1827) |
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| bak ignác vilmos HU (b. 1823) |
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| bak henrik Hungarian journalist, HU (b. 1846) |
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| b. bak lajos HU (b. 1839) |
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| bak izrael SK (b. 1840) |
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amalia jan bak Spanish actor, ES (b. 1901) |
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børge bak DK (b. 1912) |
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| bak hanyeong (b. 1870) |
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kiek bak Dutch sculptor (1930-1998), NL (b. 1930) |
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bak imre Hungarian painter, university professor, HU (b. 1939) |
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