Family name Ruchaud (Ruchaud 
) , in all the world, is a rare surname. The cognomen Ruchaud is habitual in France, where it is a rare surname, Portugal, where it is a very rare surname, and Spain, where it is an extremely rare surname. Measured by absolute frequency, the name is most common in France, Portugal, and Brazil. Much less frequently, Ruchaud is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ruchaud | Brazil, Spain, Portugal, United States, France |
| maurice ruchaud (1897-1995), FR (b. 1897) |
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| jeanine ruchaud Peerage person ID=358540, FR (b. 1931) |
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| sandrine ruchaud researcher (ORCID 0000-0002-4606-6625) |
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| stephane ruchaud FR (b. 1979) |
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| elisabeth ruchaud DE |
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