Cognomen Heynen (Heynen 
) , all around the world, is quite a rare last name. The family name Heynen is characteristic of Western Europe, particularly Belgium, where it is quite a rare surname, Switzerland, and Luxembourg. Not in comparison with a country's population, it is commonest in Western Europe, particularly Germany, Belgium, and Netherlands. Much less frequently, Heynen is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Heynen | Germany, United States, Netherlands, Belgium, Switzerland |
| anthonie willem heynen Dutch scientific instrument maker, NL (b. 1830) |
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| eugène heynen Belgian writer and playwright (1866-1950), BE (b. 1866) |
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| emil heynen German architect, DE (b. 1877) |
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| reinhard heynen (b. 1884) |
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| werner heynen German engineer, DE (b. 1895) |
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| walter heynen (b. 1889) |
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| w. heynen NL (b. 1899) |
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| karl august heynen (b. 1900) |
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| jim heynen American author, US (b. 1940) |
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| gilbert heynen Luxembourgian handball player, LU (b. 1950) |
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| julian heynen German art historian, DE (b. 1951) |
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| hilde heynen Belgian architectural theorist, BE (b. 1959) |
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| abby heynen NL (b. 1952) |
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| thierry heynen artist and art school manager (b. 1966) |
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| christoph heynen (b. 1967) |
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