Surname Deleu (Deleu 
, Делеу 
) , around the world, is quite a rare last name. The cognomen Deleu is habitual in Belgium, where it is quite a common surname, Moldova, where it is quite a rare surname, and France. In absolute terms, it most frequently occurs in Belgium, France, and Romania. Very seldom, Deleu is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Deleu | Belgium, United States, Moldova, France, Romania |
| Делеу | Ukraine, Russia, Kazakhstan, Kyrgyzstan |
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victor deleu Romanian politician (1876-1939), RO (b. 1876) |
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ioan deleu Romanian journalist, RO (b. 1877) |
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| arthur deleu Belgian painter and furniture designer, BE (b. 1884) |
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jozef deleu Belgian writer, BE (b. 1937) |
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| henri-kamiel deleu BE (b. 1879) |
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| ernest deleu Belgian artistic gymnast, BE (b. 1900) |
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| jozef deleu born 1925; died 1994 (b. 1925) |
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| thierry deleu Belgian poet and writer (1940-2013), BE (b. 1940) |
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| gilbert deleu Belgian politician, BE (b. 1943) |
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| luc deleu Belgian artist, BE (b. 1944) |
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| alain deleu French trade unionist, FR (b. 1946) |
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| frank deleu Belgian composer, BE (b. 1952) |
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| serge deleu (b. 1943) |
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| philippe deleu French politician, FR (b. 1962) |
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| barbara deleu Belgian musician, BE (b. 1975) |
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