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Home › Baby Names Directory › Eustacio

Eustacio

♂ Boy

Pronounced ews-TAH-see-oh /eʊˈstɑː.si.oʊ/Low

Meaning: Eustacio is the Spanish form of Eustace, from Greek Eustachys ('fruitful, rich in grain') or Eustathios ('steadfast, well-standing'). It carried the name of an early Christian saint into Spanish-speaking families.Low

In 30 seconds: Eustacio is the Spanish form of Eustace, Greek for 'fruitful' or 'steadfast.' A saintly, old-world boy's name, always rare here (said ews-TAH-see-oh).
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Origin MediumSpanish, Greek
MeaningEustacio is the Spanish form of Eustace, from Greek Eustachys ('fruitful, rich in grain') or Eustathios ('steadfast, well-standing'). It carried the name of an early Christian saint into Spanish-speaking families.
U.S. rank (2006)#9891 ↘ Falling
2006 U.S. births7 boys (0.00% of U.S. boys)
Peak year1922
Total births (all-time)≈ 292

Popularity in the U.S. · SSA data

peak 192219152006

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

Eustacio is the Spanish version of Eustace, from Greek Eustachys ('fruitful') or Eustathios ('steadfast'). Tied to the early martyr Saint Eustace, it reached American records chiefly through Hispanic Catholic families in the early twentieth century.

It was always scarce here, given to only about fifteen boys a year around the nineteen-twenties. An Eustacio from that time would be of a great-grandfather's generation now.

Did you know? Eustacio honors Saint Eustace, a legendary Roman convert - which is why the name traveled through Catholic Spanish-speaking families for centuries.
Overall data confidence 50%
References - Eustacio — Spanish form of Eustace; Greek 'fruitful/steadfast'; Saint Eustace; Hispanic Catholic cohort

Variations

EustaceEustaquioEustacia

Nicknames

Tacho

Famous Bearers

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If you like Eustacio…

Eustace— the English form of the same saint's name
Anastacio— a like Spanish saintly boy's name
Bonifacio— a similar old-world Hispanic name
Ignacio— a like Spanish Catholic given name

Explore names like Eustacio

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Frequently Asked

What does the name Eustacio mean?

It is the Spanish form of Eustace, from Greek for 'fruitful' (Eustachys) or 'steadfast' (Eustathios).

How do you pronounce Eustacio?

It is said ews-TAH-see-oh /eʊˈstɑː.si.oʊ/ - four syllables, stress on the second.

Is Eustacio a boy or girl name?

Eustacio is used as a boy's name.

How popular is Eustacio?

It has always been rare, given to only about fifteen boys a year at its peak.

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