Family name Lecornu (Lecornu 
) , in the entire world, is quite a rare cognomen. The last name Lecornu is characteristic of France, where it is quite a rare surname, Australia, where it is a rare surname, and South Africa, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in France, the United States, and Australia. Very seldom, Lecornu is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Lecornu | United Kingdom, South Africa, Australia, United States, France |
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léon lecornu French engineer (1854-1940), FR (b. 1854) |
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| joseph lecornu French engineer, FR (b. 1864) |
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| bernard lecornu French official (1906-1993), FR (b. 1906) |
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| rené lecornu French general officer, FR (b. 1922) |
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| alain lecornu French politician, FR (b. 1929) |
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sébastien lecornu French politician, FR (b. 1986) |
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| patrice lecornu footballer, FR (b. 1958) |
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Mr, Doug, Gael, Lise, Léo, Josh, John, Jean, June, Tony, Tina, Eric, Emma, Herb, Hugo, Otis, Yves, Yvic, Marie, Manon, Megan, Mitch, Dale, Dani, Ruth, Rene, Ms, Sã, Amy, Cã, Kim, Ray, Guy, Gã, Lee, Luc, Sandy, Joe, Marc, Mary, Mark, Maud, Mike, Sara, Alex, Alan, Kate, Paul, Noa, and Simon