Family name Rosain (Rosain 
) , in all the world, is a rare surname. The family name Rosain is habitual in France, where it is a rare surname, Argentina, and Mexico, where it is a very rare surname. Likewise, Rosain is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rosain | France, Argentina, India, Mexico, Democratic Republic of the Congo |
| claude rosain French politician, FR (b. 1958) |
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| rosain stennett researcher |
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