Cognomen Kloos (Kloos 
, Клос 
, Клоос ) , around the globe, is quite a common surname. The family name Kloos is habitual in Western Europe, particularly Netherlands, where it is quite a rare surname, Germany, and Luxembourg. Measured by absolute frequency, it is commonest in Germany, the United States, and Netherlands.
| VARIANT | COUNTRY |
|---|---|
| Kloos | United States, Romania, Austria, Germany, Netherlands |
| Клос | Ukraine, Kazakhstan, Russia, Belarus, Kyrgyzstan |
| Клоос | Ukraine, Russia, Kazakhstan |
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willem kloos Dutch poet, NL (b. 1859) |
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| harmanus kloos (b. 1817) |
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| f.j. kloos Dutch scientific instrument maker, NL (b. 1829) |
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max kloos Dutch singer, NL (b. 1884) |
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| matthias kloos (b. 1830) |
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| johan herman kloos German geologist and paleontologist (1842-1901), DE (b. 1842) |
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j.p. kloos Dutch architect, NL (b. 1905) |
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andré kloos Dutch politician (1922-1989), NL (b. 1922) |
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| abraham willem kloos botanist (1880-1952), NL (b. 1880) |
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| ludwig karl kloos architect from Austria (b. 1882) |
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| hermann kloos DE (b. 1883) |
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| cornelis kloos Dutch artist, NL (b. 1895) |
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basina kloos DE (b. 1940) |
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| willem kloos Dutch architect, NL (b. 1904) |
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| gerhard kloos German judge and psychiatrist, DE (b. 1906) |
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