In the entire world, Eustacio (Eustacio 
) is a common boy's given name. The given name Eustacio is habitual in Latin America and the Caribbean, particularly Mexico, where it is quite a rare male name, Paraguay, and Panama. In absolute terms, it is the most numerous in Mexico, Philippines, and Argentina. Also, Eustacio is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Eustacio | Philippines, Mexico, United States, Argentina, Venezuela |
Efstathios, Eustac, Eustacchio, Eustace, Eustach, Eustache, Eustachio, Eustachy, Eustacius, Eustacjusz, Eustahije, Eustaqui, Eustaquio, Eustasio, Eustasius, Eustathios, Eustazio, Eustazy, Eustațiu, Eustácio, Eustáquio, Evstafy, Evstahij, Ostap, Stathis, Ευστάθιος, Στάθης, Астафий, Евстатий, Евстафий, Евстахий, Остап, Остафий, Стафей, Эсташ, Юстас, and Євстафій
| eustacio rizo Mexican association football player, MX (b. 1971) |
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| eustacio chamorro Paraguayan footballer, PY |
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| eustacio orobia PH |
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