Cognomen Desplan (Desplan 
) , around the world, is a rare last name. The surname Desplan is habitual in France, where it is a rare surname, the United Kingdom, where it is an extremely rare surname, and the United States. Much less frequently, Desplan is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Desplan | United Kingdom, Spain, Brazil, France, United States |
| marie desplan French Righteous Among the Nations, FR (b. 1895) |
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| jean desplan FR (b. 1895) |
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| pierre marie desplan FR (b. 1895) |
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| andré desplan French magistrate, FR (b. 1924) |
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| félix desplan Guadeloupean politician, FR (b. 1943) |
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| michel desplan French magistrate, FR (b. 1955) |
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| jean-charles desplan French politician, FR (b. 1960) |
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| claude desplan French biologist and academic |
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| alain desplan |
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| juan desplan |
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Mr, Jessy, Jimmy, Théo, Harry, Henri, Felix, Marion, Martin, Maxime, Michel, Mylene, Saïna, Shelsy, Sophie, Alexis, Ardina, Claude, Célia, Karine, Keziah, Pascal, Lluã, Lydia, Laure, David, Ms, Lã, Marc, Sony, Alex, Anne, Davy, Léa, Joan, Jean, Pierre, Tina, Fara, Yann, Maria, Marie, Mario, Serge, Alain, Andre, Bruno, Denis, Eric, and Denise