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Throughout the world, Арнау (Arnau , Арнау ) is quite a rare male given name. The first name Арнау is characteristic of Andorra, where it is quite a common masculine name, Spain, where it is quite a rare male name, and Paraguay. Not in comparison with a country's population, it is commonest in Spain, the Democratic Republic of the Congo, and Paraguay. Likewise, Арнау is the last name as well as the forename.