Surname Demesmaeker (Demesmaeker 
) , worldwide, is a rare last name. The cognomen Demesmaeker is habitual in Western Europe, particularly Belgium, where it is quite a rare surname, France, where it is a rare surname, and Netherlands, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in Western Europe, particularly Belgium, France, and Germany. Much less frequently, Demesmaeker is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Demesmaeker | Germany, France, United States, Netherlands, Belgium |
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mark demesmaeker Flemish politician and MEP, BE (b. 1958) |
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| gaston demesmaeker Belgian geologist, former director of the Union Minière du Haut Katanga (UMHK) (b. 1911) |
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| albert demesmaeker BE (b. 1907) |
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| mario demesmaeker Belgian creator, BE (b. 1960) |
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| robin demesmaeker researcher ORCID ID = 0000-0003-0856-0929 |
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| catherine demesmaeker |
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| guy demesmaeker BE |
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Mr, Eddy, Eric, Erik, Hans, Frie, Frã, Iris, Itse, Oona, Yves, Marie, Mario, Sonja, Sofie, Steve, Stijn, Alice, Alain, Andre, Anton, Annik, Ella, Tijs, Jean, Jana, Ms, Ann, Ron, Guy, Jan, Tom, Tim, Els, Marc, Mark, Cindy, Sara, Anja, Arno, Bert, Koen, Ralf, Rika, Rudi, Gina, Lore, Lynn, Anne, and Bruno