Family name Aretio (Aretio 
) , around the world, is a very rare surname. The cognomen Aretio is characteristic of Chile, where it is a rare surname, Spain, where it is a very rare surname, and Argentina. Also, Aretio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Aretio | Philippines, Spain, Argentina, Venezuela, Chile |
| juan aretio Spanish association football player (1922-1973), ES (b. 1922) |
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| françois de aretio bishop of the Roman Catholic Church |
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| pietro de aretio Roman Catholic bishop |
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| rainaldo de aretio bishop of the Roman Catholic Church |
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| grazia de aretio bishop of the Roman Catholic Church |
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