Cognomen Denef (Denef 
) , all over the world, is a rare last name. The last name Denef is characteristic of Western Europe, particularly Belgium, where it is a rare surname, France, where it is a very rare surname, and Germany. Much less frequently, Denef is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Denef | Belgium, United States, Turkey, Germany, France |
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pierre-jean denef Belgian politician (1774-1844), BE (b. 1774) |
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jan denef Belgian mathematician, BE (b. 1951) |
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norbert denef DE (b. 1949) |
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| vincent j denef researcher |
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| frederik denef Dr.Sc. Katholieke Universiteit Leuven 1999 |
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Mr, Melissa, Melanie, Beverly, Kenneth, Kristin, Pascale, Nicolas, Norbert, Vincent, Monique, Francis, Philippe, Lawrence, Liesbeth, Victoria, Frederik, Sebastian, Alexandre, Boudewijn, Elisabeth, Karolien, Jeanfranã, Walter, Carine, Bea, Dan, Bart, Koen, Kleo, Paul, Dana, Dirk, Lara, Louise, Jean, Yann, Marie, Alain, Katya, Lazia, Jamie, Vicky, Marine, Agathe, Ines, and Jean-François