Last name Puignau (Puignau 
) , around the globe, is a rare surname. The family name Puignau is habitual in Uruguay, where it is a rare surname, Spain, where it is a very rare surname, and New Zealand. Not in comparison with a country's population, it is the most numerous in Spain, Uruguay, and Argentina. Likewise, Puignau is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Puignau | Uruguay, Spain, Argentina, France, United States |
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josep salvador puignau Spanish editor (1908-1974), ES (b. 1908) |
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| rafael puignau Spanish organ builder (1888–1979) (b. 1888) |
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| juan puignau Uruguayan writer, UY (b. 1945) |
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| alexandre puignau French politician, FR (b. 1974) |
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| nicolas puignau Ph.D. Université Paul Sabatier - Toulouse III 2007 |
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