Cognomen Roudaut (Roudaut 
) , in all the world, is quite a rare surname. The cognomen Roudaut is habitual in France, where it is quite a rare surname, Switzerland, where it is a rare surname, and Belarus. Very seldom, Roudaut is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Roudaut | Belarus, Australia, France, United States, Switzerland |
| marie-renée roudaut French missionary, FR (b. 1847) |
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jean roudaut French writer, FR (b. 1929) |
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jean-luc roudaut French singer-songwriter, FR (b. 1956) |
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| constant roudaut (b. 1914) |
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| robert roudaut French road cyclist, FR (b. 1931) |
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| jean roudaut French politician, FR (b. 1947) |
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| rené roudaut French diplomat, FR (b. 1951) |
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| fañch roudaut FR (b. 1942) |
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| françois roudaut (b. 1956) |
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| sandra roudaut French politician, FR (b. 1976) |
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| stéphane roudaut French politician, FR (b. 1978) |
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| raymond roudaut researcher |
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| anne roudaut researcher |
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| maiwenn roudaut (b. 1979) |
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| sandrine roudaut |
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