Surname Portais (Portais 
) , throughout the world, is a rare family name. The last name Portais is habitual in France, where it is quite a rare surname, Netherlands, where it is a very rare surname, and Argentina. In absolute terms, it is commonest in France, Argentina, and Brazil.
| VARIANT | COUNTRY |
|---|---|
| Portais | Netherlands, Argentina, Brazil, France, United States |
| francis portais French politician and printer (1869-1945), FR (b. 1869) |
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| florent portais French politician, FR (b. 1970) |
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| jean-charles portais researcher |
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| franck portais FR (b. 1971) |
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