Family name Arauco (Arauco 
) , in the entire world, is quite a rare cognomen. The surname Arauco is habitual in Latin America and the Caribbean, particularly Peru, where it is quite a rare surname, Bolivia, and Paraguay. In absolute terms, the name is most common in Latin America and the Caribbean, particularly Peru, Bolivia, and Argentina. Much less frequently, Arauco is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Arauco | Chile, Bolivia, Paraguay, Peru, Argentina |
| josé justo salcedo y arauco ES (b. 1753) |
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| ruperta maría del pilar de zabala y arauco ES (b. 1809) |
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| ignacio sabater arauco Spanish politician (1824-1889), ES (b. 1824) |
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| walter arauco camargo Peruvian architect, PE (b. 1950) |
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| arauco hernández Uruguayan film director, UY (b. 1974) |
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| arauco radal film actor, AR |
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Mr, Cely, Ciro, Kari, Kate, Kami, Paul, Raul, Rosa, Romy, Rene, Ruth, Rudy, Rune, Dani, Dany, Davi, Gaby, Gian, Gina, Gino, Lucy, Ayda, Abel, Aldo, Alan, Ms, Ed, Vj, Ale, Ana, Amy, Roy, Lau, Lex, Lio, Luis, Luz, Eva, Hã, Isa, Ida, Iã, Mari, Sara, Saul, Susy, Alex, Edy, and Luiz