Surname Back (Bak 
, Baka , Back , and others...) , across the world, is a widespread last name. The last name Back is habitual in Denmark, where it is quite a common surname, Hungary, and Luxembourg (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in India, Poland, and the United States. Also, Back is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Back, Baka, Bak | Poland, United States, India, Democratic Republic of the Congo, Turkey |
| Bek | Egypt, Poland, United States, India, Turkey |
| Бак | Ukraine, Kazakhstan, Belarus, Russia, Kyrgyzstan |
| バック | Japan |
| בק | Israel |
Aback, Baak, Bac, Baccare, Back To Basics, Bacon, Baek, Bai, Baik, Bakk, Bakka, Bakke, Batchi, Baćk, Baĉk, Bačk, Beck, Becken, Bekim, Beque, Bàck, Bàćk, Bàĉk, Bàčk, Báck, Báćk, Báĉk, Bâck, Bâćk, Bâĉk, Bâčk, Bâčķ, Bãck, Bãćk, Bãĉk, Bãčk, Bãčķ, Bäck, Băĉk, Băčk, Băčķ, Bąĉk, Bąčķ, Bǻĉķ, Bạch, Bạck, Bắck, Pack, Paek, Paik, Paj, Pak, Pakki, Peh, Päk, Resbak, Ɓack, Бай, Бацк, Бек, Пек, Пэк, פאק, باك, باي, بايك, বাই, กลับ, กลับกระโทก, กลับสงเคราะห์, จิตต์กลับ, บาหลัง, ปฤษฎางค์บุตร, สาหลัง, อุหลัง, เรืองยะกลับ, แบ็ค, バイ, パク, ベク, ペク, 巴克, 拜克, 白, 白氏, 백, and Ｂａｃｋ
| walter back DE (b. 1400) |
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| jacobus de back (b. 1594) |
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| margarethe back (b. 1626) |
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george back British Royal Navy admiral (1796–1878), GB (b. 1796) |
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| konrad back (b. 1749) |
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| back olof andersson Swedish painter (1767-1820), SE (b. 1767) |
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| franz karl back DE (b. 1760) |
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| back erik andersson Swedish painter (1778-1847), SE (b. 1778) |
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| peter back (b. 1784) |
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| karl back politician (1799-1869), DE (b. 1799) |
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| august l. back DE (b. 1791) |
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| friedrich back DE (b. 1801) |
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| julie back DK (b. 1816) |
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oskar back Dutch violinist and music teacher of Hungarian family origin, AT (b. 1879) |
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| otto back German politician and jurist (1834-1917), DE (b. 1834) |
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