Surname Cosyns (Cosyns 
) , around the globe, is quite a rare last name. The last name Cosyns is habitual in Belgium, where it is quite a rare surname, France, where it is a rare surname, and New Zealand. In absolute terms, it most frequently occurs in Belgium, France, and the United States. Much less frequently, Cosyns is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Cosyns | Germany, Canada, France, United States, Belgium |
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max cosyns Belgian physicist and explorer, BE (b. 1906) |
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| antoine françois cosyns Belgian painter and engraver (1875-1936), BE (b. 1875) |
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| leo cosyns BE (b. 1875) |
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| louis cosyns French politician, FR (b. 1952) |
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| marc cosyns BE (b. 1954) |
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| charlotte cosyns Righteous Among the Nations, BE |
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| sarah cosyns researcher (ORCID 0000-0002-5173-4296) |
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| marc cosyns Belgian performing artist, BE |
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| jean-pierre cosyns researcher |
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| marjan cosyns researcher |
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| bernard cosyns researcher |
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| p cosyns researcher |
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| eric cosyns |
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| elisabeth cosyns BE |
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| hannes cosyns |
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Mr, Ross, Rick, Rien, Rudi, Ryan, Dany, Dirk, Gael, Gwen, Lori, Loic, Luis, Jona, Jean, Tony, Tine, Eric, Evie, Hugo, Owen, Yana, Paul, Kris, Koen, Bart, Ms, An, Seb, Bã, Kim, Guy, Leo, Lea, Luc, Jan, Yves, Tom, Els, Fen, Wim, Marc, Mary, Mike, Anne, Arne, Chip, Cari, Tim, and Marie