Theia
Feminine · “goddess”
Theia is the Titan of sight and shining, mother of the sun and moon — and the name given to the planet that struck the earth and made ours.
How old is the name Theia?
Theia first appears in US birth records in 1967 — 58 years ago. The typical Theia is a kid of about 6 — this name's wave is very recent. About 1,200 people named Theia are estimated to be alive in the US today.
When was the name Theia most popular?
Theia peaked in 2019, reaching #1802 nationally. Today it ranks #1981, 179 places below that high. See the whole 2019 chart.
Where it comes from
From theos to Theia
The story of Theia
Theia is the Titan of sight and of the shining of gold and silver, and Pindar credits her with the value people place on them. Astronomers named after her the Mars-sized body whose collision with the early earth is thought to have formed the moon — which is apt, since she mothered the moon in myth. The name is in current use.
Meaning
goddess, divine
From the Greek theia, the feminine of theios, 'divine', from theos, 'god'. Theia was a Titan, mother of Helios, Selene and Eos — sun, moon and dawn. The word is ordinary Greek and the meaning undisputed.
How the name formed
- theos
- theia
- Theia
Related forms: Θεία · Thea · Thea
Pronouncing Theia
THAY-uh
Two syllables, stress on the first. Some bearers say THEE-uh, and both are in use.
Nicknames for Theia
Moderate
What the data says
146 years of official birth records
The long climb, and where it stands now
The same years in position rather than babies
- First recorded
- 1967
- Most girls named
- 2019113 — the highest on record
- Peak rank
- #1802reached in 2019
- Change vs 2024
- −11.8%97 in 2025, from 110
Rank is a position, a count is a headcount, and they move independently — a name can hold its rank while the number of babies behind it falls. Source: U.S. Social Security Administration.
Theia in other languages
The same name elsewhere
- Θεία in Greek — transliteration
- Thea in English — related form
- Thea in German — related form
Strongest US states over the last decade: California, Texas, Florida.
Theias among us
people named Theia are estimated to be alive in the US today
About 1 girl in 16,570 born in 2025 was named Theia
Estimated from SSA birth records and published actuarial life tables. Method
Is it right for you
What happens to a name after it peaks
The Tareva test
Every popular name lives one long story — a climb, a peak, a slow settling back. Theia's later chapters haven't been written yet, so we borrowed them: Tareva climbed just as high around 1986, and its whole arc is on record. Line the two peaks up, and Tareva's path sketches the road Theia is walking now.
Theia sits in the calm middle of the cycle — neither chasing a wave nor sliding off one. Middle-of-the-cycle names age slowly and predictably.
A scored estimate from 146 years of naming cycles — not a prophecy. Great names outlive statistics. How this is scored
Where Theia is headed
Theia should hold steady through 2030 — the curve is flat, and flat curves are the most predictable kind. Its history is short or jumpy, though, so read this as a sketch rather than a promise.
Low confidence — fitted on official counts through 2025.
A damped-trend projection of the official birth data — a sketch of momentum, not a promise. Every name's forecast, ranked.
Theia beside its neighbors
The names ranked closest to Theia in 2025, in babies rather than position — the bars are to scale.
US girls given each name in 2025.
The trade-off
- That the impactor which made our moon is named for the mother of the moon is a first-rate fact.
- The divine meaning is transparent and undisputed.
- Thea is available as a related form that is fashionable now.
- The first vowel splits between two readings.
- Thea and Theia are close enough to be confused constantly.
- It is very new in American records.
Nobody names a baby alone.
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What they receive
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Theia
Feminine · #1981 in the U.S.
Frequently asked
- How many Theias are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 1,200 people named Theia are estimated to be alive in the US today.
- How popular is the name Theia in 2025?
- Theia ranks #1981 among US girl names in 2025, with 97 babies given the name.
- How rare is the name Theia?
- About 1 in every 16,570 US girls born in 2025 was named Theia — 97 in all.
- Will my child share the name Theia with classmates?
- Theia will almost certainly be the only one in school.
Ranked beside Theia
Names sitting at a similar level of popularity right now.
Melinda#1981 · Reva#1981 · Elana#1981 · Elisheva#1981 · Charity#1981 · Janyla#1981 · Sequoia#1981 · Shanaya#1981
Looking for what else is popular rather than what resembles Theia? See the current top 100.
Choosing between Theia and another name?
See them side by side — full stats, history and a gentle verdict.
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Weighing a whole shortlist? Add the rest in the builder, or settle it with a bracket.
Cast your vote
Which one would you pick?
Your gut first, the numbers after — the split shows once you pick.
US figures from the Social Security Administration. 1880–2025. Data & methodology
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