Cognomen Lemasson (Lemasson 
) , all around the world, is quite a rare family name. The last name Lemasson is characteristic of France, where it is quite a rare surname, Mauritius, and Belgium, where it is a rare surname. In absolute terms, it most frequently occurs in France, the United States, and Belgium. Much less frequently, Lemasson is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Lemasson | Brazil, Belgium, United States, France, Mauritius |
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albert lemasson French painter (1892-1982), FR (b. 1892) |
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paul lemasson French painter, FR (b. 1897) |
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| émile lemasson French politician, FR (b. 1848) |
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| henri lemasson French photographer, FR (b. 1870) |
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| auguste lemasson FR (b. 1878) |
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| paul lemasson FR (b. 1898) |
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| louis lemasson French association football player and association football manager (1929-2001), FR (b. 1929) |
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| yannick lemasson French political activist (1938-2014), FR (b. 1938) |
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alexandra lemasson FR |
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| christian lemasson French politician, FR (b. 1952) |
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| jean-edouard lemasson French politician, FR (b. 1953) |
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| jean-claude lemasson French politician, FR (b. 1960) |
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| françois lemasson footballer, FR (b. 1963) |
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| éric lemasson French journalist, FR (b. 1966) |
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| frédéric lemasson French association football player, FR (b. 1974) |
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