Cognomen Merk (Merk 
, ميرك 
, 默克 
) , around the globe, is a common family name. The last name Merk is habitual in Germany, where it is quite a common surname, Switzerland, where it is quite a rare surname, and Hungary. In absolute terms, it is commonest in Germany, the United States, and Switzerland. Very seldom, Merk is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Merk | Poland, Switzerland, Hungary, United States, Germany |
| ميرك | Iran, Iraq |
| 默克 | China |
| Мерк | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| johannes merk DE (b. 1570) |
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| johannes merk (b. 1731) |
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joseph merk noted Austrian cellist, often described as one of the most influential of the first half of the 19th century, AT (b. 1795) |
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| josef merk (b. 1780) |
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| wilhelm merk swiss politician (1791-1853), CH (b. 1791) |
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william merk British politician, IN (b. 1852) |
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| eduard merk German painter, 1816-1888, DE (b. 1816) |
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| august merk CH (b. 1853) |
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| valentin merk (b. 1853) |
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| emma merk DE (b. 1854) |
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| friedrich merk US (b. 1858) |
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| eduard merk DE (b. 1859) |
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bruno merk German politician (1922-2013), DE (b. 1922) |
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| ludwig merk (b. 1862) |
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| gustav merk German priest and archivist, DE (b. 1874) |
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