Family name Werlen (Werlen 
) , globally, is quite a rare cognomen. The surname Werlen is habitual in Switzerland, where it is quite a rare surname, Argentina, where it is a rare surname, and Peru. Not in comparison with a country's population, the name is most common in Switzerland, Argentina, and France. Likewise, Werlen is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Werlen | Peru, Switzerland, Argentina, France, Brazil |
| josef werlen CH (b. 1872) |
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| ludwig werlen Swiss painter (1884-1928), CH (b. 1884) |
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marc werlen Swiss ice hockey player, CH (b. 1978) |
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| iwar werlen Swiss linguist, CH (b. 1947) |
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| benno werlen Swiss geographer, CH (b. 1952) |
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| martin werlen Swiss catholic prelate, CH (b. 1962) |
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| egon werlen researcher |
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| laura werlen researcher (ORCID 0000-0001-5042-8353) |
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| m. werlen researcher ORCID ID = 0000-0002-4374-4945 |
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| karl werlen Ph.D. ETH Zürich 1993 |
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| bartholomäus werlen |
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