Worldwide, Eustáquio (Eustaquio 
, Eustachius 
, Eustáquio 
) is a common masculine first name. The first name Eustáquio is habitual in Equatorial Guinea, where it is quite a common male name, Peru, and Argentina. Not in comparison with a country's population, it most frequently occurs in Mexico, Brazil, and Philippines. Also, Eustáquio is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Eustaquio | Spain, Philippines, Mexico, Argentina, Brazil |
| Eustachius | Germany, Indonesia, United States, Tanzania, Brazil |
| Eustáquio | Portugal, Canada, Brazil, United States |
Efstathios, Eustac, Eustacchio, Eustace, Eustach, Eustache, Eustachio, Eustachy, Eustacio, Eustacius, Eustacjusz, Eustahije, Eustaqui, Eustasio, Eustasius, Eustathios, Eustazio, Eustazy, Eustațiu, Eustácio, Evstafy, Evstahij, Ostap, Stathis, Ευστάθιος, Στάθης, Астафий, Евстатий, Евстафий, Евстахий, Остап, Остафий, Стафей, Эсташ, Юстас, and Євстафій
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eustáquio van lieshout Dutch priest and pastor in Brazil, NL (b. 1890) |
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eustáquio gomes Brazilian journalist (1952-2014), BR (b. 1952) |
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| eustáquio reis Brazilian economist, BR (b. 1947) |
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| eustáquio antônio meireles de oliveira politician from Brazil, BR (b. 1950) |
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| eustáquio josé pereira politician from Brazil, BR (b. 1953) |
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| eustáquio neves Brazilian photographer, BR (b. 1955) |
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| eustáquio afonso araújo BR (b. 1946) |
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| eustáquio chagas de paiva (b. 1960) |
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| eustáquio grilo Brazilian composer, BR |
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| eustáquio s dias researcher |
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| eustáquio januário quibato Angolan diplomat |
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