Family name Parnau (Parnau 
) , around the world, is a rare last name. The surname Parnau is characteristic of Romania, where it is a rare surname, Spain, and Greece, where it is a very rare surname. In absolute terms, it is commonest in Romania, the United States, and Spain. Much less frequently, Parnau is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Parnau | Romania, Morocco, Spain, United States, France |
| bernhard pollack von parnau Austrian textile manufacturer, AT (b. 1847) |
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| bruno pollack von parnau (1879-1958), AT (b. 1879) |
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| john l. parnau American mineral collector, of Campbell, California, USA (b. 1906) |
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| ramon parnau i fayet Spanish politician, ES |
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| francesc xavier parnau i pagés ES |
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