Cognomen Lefrancois (Lefrancois 
) , around the world, is quite a common family name. The cognomen Lefrancois is habitual in France, where it is quite a rare surname, Canada, and New Zealand. In absolute terms, this name is the most popular in France, Canada, and the United States. Very seldom, Lefrancois is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Lefrancois | Canada, France, New Zealand, United States, Belgium |
Lefrançois, and Лефранцоис
| jacques lefrancois French politician, FR (b. 1955) |
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| patrick lefrancois French politician, FR (b. 1960) |
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| alain lefrancois French politician, FR (b. 1965) |
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| thierry lefrancois French politician, FR (b. 1970) |
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| cathy lefrancois Canadian bodybuilder, CA (b. 1971) |
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| jean-louis lefrancois French politician, FR (b. 1971) |
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| louise h lefrancois researcher |
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| daniel lefrancois researcher ORCID ID = 0000-0002-6128-8234 |
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| stephane lefrancois researcher |
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| christel lefrancois researcher |
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| jacques lefrancois particle physicist at LAL in France |
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| olivier lefrancois cyclist, FR (b. 1985) |
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| renee lefrancois CA |
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| thierry lefrancois FR |
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