Cognomen Lefaucheur (Lefaucheur 
) , throughout the world, is a rare surname. The surname Lefaucheur is characteristic of France, where it is a rare surname, Australia, where it is a very rare surname, and Canada, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in France, Australia, and the United States. Very seldom, Lefaucheur is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Lefaucheur | United States, Canada, France, Australia |
| nadine lefaucheur French sociologist, FR (b. 1941) |
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| carmen lefaucheur researcher (ORCID 0000-0001-7386-6305) |
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| j-p lefaucheur researcher |
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| romain lefaucheur researcher |
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| louis lefaucheur researcher (ORCID 0000-0001-7762-6480) |
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| carmen lefaucheur researcher ORCID ID = 0000-0002-6244-0795 |
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| jean-pascal lefaucheur researcher |
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Mr, Laura, Laure, Louis, Jamie, Julie, Herve, Marion, Marcel, Meghan, Michel, Myriam, Sandra, Steven, Sylvie, Annick, Axelle, Carmen, Celine, Cecile, Claude, Pascal, Dylan, René, Roger, Paule, Ms, Sam, Guy, Lea, Marc, Manu, Anne, Rose, Rene, Remi, Pierre, Gaã, Jean, Elie, Eric, Yann, Marie, Mindy, Andre, Cyril, Bruno, Kevin, Jack, and Daniel