Cognomen Leuker (Leuker 
) , across the world, is a rare family name. The family name Leuker is characteristic of Germany, where it is a rare surname, Canada, where it is a very rare surname, and Italy, where it is an extremely rare surname. Measured by absolute frequency, the name is most common in Germany, the United States, and Italy. Very seldom, Leuker is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Leuker | Germany, Italy, Philippines, United States, Canada |
| sylvia leuker German journalist and author, DE (b. 1962) |
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| maria-theresia leuker DE (b. 1957) |
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| tobias leuker DE (b. 1968) |
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| christina leuker researcher ORCID ID = 0000-0003-2337-3785 |
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| wilhelm leuker DE |
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| bettina leuker |
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| lion leuker |
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| esaias leuker |
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| lion leuker DE (b. 1995) |
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Mr, David, Glenn, Laura, Janet, James, Jessi, Jörg, Elsie, Erwin, Heinz, Frank, Willi, Markus, Melina, Stefan, Alfred, Andrea, Annika, Bertin, Kelsey, Gisela, Peter, Petra, Karin, Maren, Ms, Jo, Max, Jim, Tom, Ted, Alex, Anna, Anne, Bert, Leslie, Rene, Gary, Gerd, Lars, Lisa, Jana, Jack, Theo, Ines, Mario, Marco, Dirk, and Ludger