Cognomen Den (登 
, Den 
, דן 
, and others...) , in the world, is a common surname. The surname Den is habitual in Bhutan, where it is quite a common surname, Brunei, and Israel. Measured by absolute frequency, it is commonest in China, Indonesia, and Pakistan. Likewise, Den is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 登 | China |
| Den | China, Japan, Indonesia, India, Pakistan |
| דן | Israel |
| デン | Japan |
| Ден | Kazakhstan, Ukraine, Kyrgyzstan, Belarus, Russia |
| เด็น | Thailand |
| دن | Egypt, Yemen, Sudan, Iraq, Saudi Arabia |
Dan, Danne, Dean, Deen, Deien, Denarius, Dene, Denier, Denmark, Denn, Denne, Dentu, Der, Deñ, Deň, Di, Die, Dèn, Dèñ, Dén, Déñ, Dên, Dêñ, Dêń, Dën, Dëñ, Dēn, Dėn, Dęn, Dęñ, Dẹn, Dến, Dền, Dện, El, I, Ii, Il, La, Sa, Sá, Ten, Them, Van, Vandenberg, Vandenbosch, Vandenburg, Vĩ, Ďen, Ďéñ, Ďëñ, Đen, Đèn, Đén, Đên, Đêñ, Đëñ, Đëň, Đęñ, Đěň, Đẹn, Đẻn, Đến, Đền, Đện, Дэн, מלך, دين, อเดน, เดน, เดนท์, เดล, เด็ง, ้เด่น, ဒေံ, 佃, 扥, 扽, and Ｄeń
| den falske oluf PL (b. 1350) |
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| vladimir den PL (b. 1823) |
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| rachel den holocaust victim, b. 1862-03-18, AT (b. 1862) |
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| petr den Czech publicist, lawyer and writer (1898-1970), CZ (b. 1898) |
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denmark Belgian visual artist, BE (b. 1950) |
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| den brotheridge British Army officer, GB (b. 1915) |
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| den tana association football player, RS (b. 1933) |
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| piet boom van den (b. 1924) |
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| den dover British politician (born 1938), GB (b. 1938) |
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| gordon den South African cricketer, ZW (b. 1939) |
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| den murcott (b. 1947) |
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| laurens ten den Dutch actor, writer and theatre director, NL (b. 1964) |
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| den skaldede kok (b. 1964) |
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| robert b. den researcher |
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| den thatcher actor |
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