Head to head · Boys' names
Elio vs Kieran
#388 vs #389 in 2025 · both climbing the charts fast
Elio is a whisker ahead (#388 vs #389 in 2025) and both are climbing the charts fast. The records will not split these two — sound, story and your own last name will.
Cast your vote
Which one would you pick?
Your gut first, the numbers after — the split shows once you pick.
The tale of the tape
On the charts, Elio leads 5 measures of 6; Kieran leads 1.
Ranks, counts and years are measured in the official US birth record; the classroom and living figures are estimates computed from it. The dot marks the side each measure favours on the charts — more common, not better.
What the records say
146 years of US births, drawn on one scale
Two curves, one scale
Who owned which decade
- 1910s: Elio #1736, Kieran #3096 — Elio higher
- 1920s: Elio #1601, Kieran #3719 — Elio higher
- 1930s: Elio #2588, Kieran #3094 — Elio higher
- 1940s: Elio #2979, Kieran #2670 — Kieran higher
- 1950s: Elio #3113, Kieran #1720 — Kieran higher
- 1960s: Elio #2121, Kieran #1267 — Kieran higher
- 1970s: Elio #2359, Kieran #1375 — Kieran higher
- 1980s: Elio #2142, Kieran #1240 — Kieran higher
- 1990s: Elio #2658, Kieran #759 — Kieran higher
- 2000s: Elio #2576, Kieran #544 — Kieran higher
- 2010s: Elio #2326, Kieran #525 — Kieran higher
- 2020s: Elio #721, Kieran #467 — Kieran higher
Kieran stood higher in 9 of 12 decades; Kieran has held the lead since the 1940s.
Rank by decade
| Decade | Elio | Kieran |
|---|---|---|
| 1910s | #1736 | #3096 |
| 1920s | #1601 | #3719 |
| 1930s | #2588 | #3094 |
| 1940s | #2979 | #2670 |
| 1950s | #3113 | #1720 |
| 1960s | #2121 | #1267 |
| 1970s | #2359 | #1375 |
| 1980s | #2142 | #1240 |
| 1990s | #2658 | #759 |
| 2000s | #2576 | #544 |
| 2010s | #2326 | #525 |
| 2020s | #721 | #467 |
Average national rank across each decade. A dash means the name sat outside the recorded top of that decade.
Around the world
Elio
- France#17
Kieran
Not charting outside the US.
National statistics offices, latest published year.
The names themselves
Meaning, roots, sound and the people who carried each
Where each name comes from
Elio
"sun", or a Roman family name of uncertain origin
Two readings sit side by side. In Italian, Elio is the standard form of Helios, the Greek sun — that is why Italian dictionaries gloss it as "sun". Historically, though, it comes down from the Latin gens name Aelius, whose own origin was already unclear to the Romans; the link between Aelius and Greek helios is proposed but not proven. Neither reading cancels the other, and both are genuinely part of the name.
Aelius → Elio
How it traveled
The name begins in Rome as Aelius, the family name of the emperor Hadrian, born Publius Aelius Hadrianus in the first century — a name stamped on inscriptions, coins and the Aelian bridge across the Tiber. Italian and Spanish carried it forward as Elio, where it also came to serve as the vernacular form of Helios, the Greek sun.
Kieran
little dark one, from Irish ciar, 'dark'
Ciarán is a diminutive of the Old Irish adjective ciar, 'dark, black' — originally a description of dark hair or complexion.
Ciar → Ciarán → Ciaran → Kieran
How it traveled
The name begins as Old Irish Ciarán, built from ciar, 'dark', with the affectionate -án ending that Irish uses for so many of its old names. It belonged to two of the most prominent figures of early Irish Christianity, including the sixth-century abbot who founded the monastery at Clonmacnoise on the Shannon, and it stayed in Irish use through the centuries that followed.
Where a reading is contested the note says so — this page does not turn a guess into a fact. The chain is each name's recorded forms, oldest first; the story is its opening, told in full on the name's own page.
Out loud, and in short
Elio
EH-lee-oh
That is the Italian and Spanish pronunciation, with a short first vowel. Many English speakers reach for EE-lee-oh instead, on the pattern of Eli. Both are heard in the US, so it helps to say which one you mean early and often.
- Eli — The most natural English short form, and a long-established given name in its own right — expect some people to assume it is the full name.
- Lio — Informal, used within families; also spelled Leo by people who mishear it.
- Elito — Spanish-style affectionate diminutive, used by relatives rather than at school.
Kieran
KEER-un
Two syllables, stress on the first. In Irish, Ciarán is closer to KEER-awn with a fuller second vowel. The occasional English mispronunciation is KYE-ran, which is worth correcting early.
- Kier — The most common short form in English-speaking use; informal, and also found as a surname.
- Kee — Informal, mostly used within families and among young children.
- Ki — A clipped spoken form, informal; rarely written.
Is it right for you
The differences that decide it, laid out by what you want
Choose by what you want
Choose Elio if you want…
- a name on the way upup 690 places on the charts in five years
- a name with more sound in itElio runs 3 syllables, Kieran 2
- a name that charts abroad tooElio is on the national lists of France
Choose Kieran if you want…
- a name with fewer syllablesKieran is 2 syllables to Elio's 3
Each line is a measured difference between the two names — a rank, a count, a recorded form — never a judgement of either. Save the one that answers your question; it lands on your shortlist.
The trade-offs, name by name
Elio
Strengths
- Spelled exactly as it sounds once the first vowel is settled — four letters, no silent parts, nothing to dictate twice.
- Works unchanged in Italian and Spanish, and needs only an accent in Portuguese, so it travels without being translated.
- Comes with Eli already waiting as a short form, a name Americans know well and spell correctly.
To consider
- The EH-/EE- split is real and will follow him. Teachers, coaches and roll-calls will guess, and he will spend a certain amount of life correcting them — cheerfully, most likely, but doing it.
- It sits very close to Elia, Elias, Elliot and Emilio, and gets mistaken for all four in writing and in speech.
- For adults who read the novel or saw the film, the name is closely tied to Call Me by Your Name. That association will fade with his own generation, but it is strong right now among grown-ups.
Kieran
Strengths
- The spelling is already phonetic for English readers — no accent mark to lose, unlike the Irish Ciarán.
- An unbroken record in Irish use since the early medieval period, so it is old without sounding antique.
- Works in both English and Irish contexts, and is recognized across Ireland, Britain, Australia and North America.
To consider
- Kieran, Ciaran, Kieron and Keiran all circulate, so he will spend a lifetime spelling it out — pleasantly, but often.
- Some English speakers reach for KYE-ran on first sight. One correction usually settles it, but expect the correction.
- Beyond Kier, the name does not shorten much. If nicknames matter to you, this one offers fewer doors than most.
Documented properties of each name — how it spells, travels and shortens — not opinions about the child.
With your last name
Say both in full. The notes are facts about letters and sound — a rhyme, a shared initial, the monogram — not a verdict on either name.
Type a last name to hear Elio and Kieran in full.
Weighing the whole shortlist? Run the full comparison — up to eight names with your last name, initials, classroom projections and a printable report.
Decide together
Nobody names a baby alone
Still torn between Elio and Kieran?
Put both to the vote.
One link to your partner, your parents, your sister. Each of them gets the two names, a one-tap answer and room to say why — and every reply lands in one place.
Free to start · no account needed · everyone you invite votes in one tap
More than two in the running? Settle it with a bracket or run the full comparison with your last name.
More head-to-heads
Same measures, different pair. Sixty more are dealt daily in the arena.
Lists these names appear on
- France's favorites still rare in America
- Names ending in -o
- Names ending in -io
- Irish names beyond St. Patrick's Day
- all guides
Where Elio and Kieran each sit in the library — alternatives in the same style, ranked by the same records.
Elio or Kieran — the short answers
- Which is more popular, Elio or Kieran?
- Elio, in 2025: Elio ranked #388 with 818 babies; Kieran ranked #389 with 817 babies.
- Which name is rising faster, Elio or Kieran?
- Elio. Over the last five years Elio moved up 690 places; Kieran moved up 125 places.
- Which is the older name, Elio or Kieran?
- Elio entered the US charts in 1912; Kieran entered the US charts in 1918. On the American record, Elio is the older name.
- How many people are named Elio and Kieran?
- About 4,600 people named Elio are estimated to be alive in the US today. About 17,000 people named Kieran are estimated to be alive in the US today.
- Will there be other Elios or Kierans in the classroom?
- Elio will almost certainly be the only one in school. Kieran will almost certainly be the only one in school.
US figures from the Social Security Administration, 1880–2025; international figures from national statistics agencies. Votes are battle voters on this site, not the birth record. Data & methodology
Keep playing
Sixty more head-to-heads are dealt in the arena every day — or line up Elio, Kieran and the rest of your shortlist with your last name in one printable report.
Free to start · no account needed · everyone you invite votes in one tap