Io

♂ Boy

How to Pronounce Io

Pronounced EE-oh /ˈiː.oʊ/Medium

Meaning: A name from Greek myth — Io, a mortal loved by Zeus and turned into a heifer. Also the innermost of Jupiter's large moons. A short, myth-rich name.Low

In 30 seconds: A two-beat name: Io — a Greek-myth name; also a moon of Jupiter (Greek) (said 'EE-oh'). A Greek-myth name, which we note.

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Origin LowGreek

MeaningA name from Greek myth — Io, a mortal loved by Zeus and turned into a heifer. Also the innermost of Jupiter's large moons. A short, myth-rich name.

U.S. rank (2023)#12949 ↘ Falling

2023 U.S. births5 boys (0.00% of U.S. boys)

Peak year2014

Total births (all-time)≈ 31

Popularity in the U.S. · SSA data

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

Io is a name from Greek myth, Io, also a moon of Jupiter; a short, myth-rich name (said 'EE-oh').

It appears only rarely for boys in the U.S. Rare, mythic, and short.

Did you know? Io is a figure of Greek myth — a mortal loved by Zeus — and the name of the innermost large moon of Jupiter (said 'EE-oh').

Overall data confidence 44%

References — Io — Greek myth Io; also a moon of Jupiter

Variations

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Nicknames

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Famous Bearers

Famous bearers coming soon.

If you like Io…

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Theo— a like short Greek-flavoured name

Milo— a like short -o name

Enzo— a like short -o name

Explore names like Io

By themegreek short mythology celestial moon

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Frequently Asked

What does the name Io mean?

Io is a name from Greek myth — a mortal loved by Zeus — and also a moon of Jupiter.

How do you pronounce Io?

It's said EE-oh /ˈiː.oʊ/ — two syllables, stress on the first.

Is Io a boy or girl name?

Here Io is used as a boy's name.

How popular is Io?

Io is extremely rare in the U.S. — a deep-tail, newly emerging name.