Cognomen Ruault (Ruault 
) , around the world, is quite a rare surname. The cognomen Ruault is habitual in Western Europe, particularly France, where it is quite a rare surname, Austria, where it is a rare surname, and Belgium. Not in comparison with a country's population, it is commonest in France, Canada, and Belgium. Very seldom, Ruault is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ruault | United Kingdom, Belgium, Austria, Canada, France |
| alexandre-jean ruault French politician, FR (b. 1745) |
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| nicolas ruault (b. 1752) |
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| albert ruault (b. 1850) |
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| ange ruault FR (b. 1900) |
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| philippe ruault French photographer (1949-), FR (b. 1949) |
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| jean-claude ruault French politician, FR (b. 1949) |
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| georges ruault FR (b. 1946) |
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| christian ruault French politician, FR (b. 1963) |
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| franco ruault Austrian writer, AT (b. 1969) |
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| valentin ruault researcher (ORCID 0000-0003-0562-1706) |
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| janine ruault |
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| joseph marie emmanuel ruault FR |
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| jean-luc ruault |
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