Surname Wilser (Wilser 
) , worldwide, is a rare cognomen. The cognomen Wilser is characteristic of Latin America and the Caribbean, particularly Honduras, where it is a rare surname, Nicaragua, and Venezuela. Not in comparison with a country's population, it is the most numerous in Germany, the United States, and France. More frequently, Wilser is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Wilser | Germany, Costa Rica, Guatemala, United States, Peru |
| ludwig wilser German anthropologist, racial theorist, archaeologist, prehistorian and author, DE (b. 1850) |
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| julius wilser German geologist and university teacher (1888-1949), DE (b. 1888) |
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| adolf wilhelm wilser DE (b. 1882) |
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jeff wilser American author |
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