Head to head · Boys' names
Louis vs Ronan
#249 vs #247 in 2025 · both holding its place on the charts
Ronan is a whisker ahead (#247 vs #249 in 2025) and both are holding its place on the charts. 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
The tape is even: Louis and Ronan each lead 3 measures of 6.
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
- 1880s: Louis #19, Ronan — — Louis higher
- 1890s: Louis #22, Ronan — — Louis higher
- 1900s: Louis #25, Ronan — — Louis higher
- 1910s: Louis #23, Ronan — — Louis higher
- 1920s: Louis #29, Ronan — — Louis higher
- 1930s: Louis #42, Ronan — — Louis higher
- 1940s: Louis #57, Ronan — — Louis higher
- 1950s: Louis #82, Ronan #2663 — Louis higher
- 1960s: Louis #107, Ronan #3451 — Louis higher
- 1970s: Louis #137, Ronan #4377 — Louis higher
- 1980s: Louis #159, Ronan #4881 — Louis higher
- 1990s: Louis #215, Ronan #3823 — Louis higher
- 2000s: Louis #311, Ronan #692 — Louis higher
- 2010s: Louis #296, Ronan #373 — Louis higher
- 2020s: Louis #247, Ronan #267 — Louis higher
Louis stood higher in every recorded decade — 15 of 15.
Rank by decade
| Decade | Louis | Ronan |
|---|---|---|
| 1880s | #19 | — |
| 1890s | #22 | — |
| 1900s | #25 | — |
| 1910s | #23 | — |
| 1920s | #29 | — |
| 1930s | #42 | — |
| 1940s | #57 | — |
| 1950s | #82 | #2663 |
| 1960s | #107 | #3451 |
| 1970s | #137 | #4377 |
| 1980s | #159 | #4881 |
| 1990s | #215 | #3823 |
| 2000s | #311 | #692 |
| 2010s | #296 | #373 |
| 2020s | #247 | #267 |
Average national rank across each decade. A dash means the name sat outside the recorded top of that decade.
Around the world
Louis
- France#5
- Canada#31
- England & Wales#47
- Scotland#83
Ronan
- Scotland#60
National statistics offices, latest published year.
The names themselves
Meaning, roots, sound and the people who carried each
Where each name comes from
Louis
famous in battle
From the Frankish elements hlud, famous or loud, and wig, battle or war. The German cousin is Ludwig, which shows the shape more plainly. It was the standard royal name of the Franks and then of France, and the meaning was chosen for exactly the reasons it looks like it was.
Hludwig → Chlodovechus → Loys → Louis
How it traveled
Clovis converted to Christianity around the end of the fifth century and his baptism at Reims tied the Frankish kingdom to Rome; his name became the royal name of the dynasty. It shifted spelling as French shifted pronunciation — Chlodovechus, Hlodovicus, Loys, Louis — and eighteen French kings carried the final form, including the one who built Versailles and the one who lost his head.
Ronan
little seal
From Old Irish rón, 'seal', with the affectionate diminutive ending -án.
Rónán → Ronan
How it traveled
Rónán is an early Irish name built from rón, 'seal', with the diminutive -án that Irish uses for smallness and affection. Several saints of the early medieval Irish church carried it, and one of them gave his name to Locronan in Brittany, where the name has stayed in ordinary Breton use ever since — which is why Ronan still reads as a native name in western France as well as in Ireland.
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
Louis
LOO-iss
Two syllables in American English, with the s sounded. France says LOO, leaving the consonant entirely unspoken — so the written name and the spoken one are a syllable apart there. Both are correct in their own countries, and a Louis with French relatives will answer to both.
- Lou — The name without its final consonant; warm, plain, fully unisex, and a standing name in American use.
- Louie — The affectionate extension; informal, cheerful, and strongly associated with mid-century America.
- Lu — The shortest form, fully unisex and current; brisk and used by friends.
Ronan
ROH-nan
Stress on the first syllable. In Irish, Rónán has a long vowel in both syllables — closer to ROH-nawn — and the accents mark it; English speakers generally drop both and say ROH-nan.
- Ro — The usual informal clip within families; rarely used on paper.
- Ronnie — Works, but arrives mostly from Ronald and Veronica, so it carries an older feel and stands alone as a name in its own right.
- Rone — A one-syllable shortening heard among friends and teammates rather than adults.
Who has carried each name
Louis
Louis Armstrong (b. 1901) — Jazz's founding genius ("What a Wonderful World")
Louis Pasteur (b. 1822) — Gave us pasteurization and vaccines
Louis XIV of France (b. 1638) — The Sun King who built Versailles
Ronan
Ronan Farrow (b. 1987) — Pulitzer-winning investigative journalist
Ronan Keating (b. 1977) — Boyzone frontman
Source: Wikidata — the one source on this page that is not an official agency.
Is it right for you
The differences that decide it, laid out by what you want
Choose by what you want
Choose Louis if you want…
- a name holding steadyLouis is holding its place on the charts
- a name that charts abroad tooLouis is on the national lists of France, Canada, England & Wales and Scotland
- a long American recordLouis was already in use when US records began in 1880
- a name that ages quietlyan estimated 12% chance of feeling dated by 2040, against 40% for Ronan
Choose Ronan if you want…
- a name on the way upup 23 places on the charts in five years
- a newer arrivalRonan entered the US charts in 1959
- a name that feels very nowRonan is holding its place on the charts
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
Louis
Strengths
- It has been a royal name in France for fifteen hundred years and is standard in every European language.
- Lou, Louie and Lu are all available and belong to different registers.
- It charts currently in four countries at once, which almost no name does.
To consider
- The last consonant is spoken in America and not in France, which is the one permanent point of friction.
- Lewis is the English spelling of the same name and will be written by some people.
- Nearly every child given this spelling is a boy; the record's girls are very few.
Ronan
Strengths
- Spelled the way it sounds for English speakers, with the stress falling where readers expect it.
- A documented record stretching back to the early Irish church and forward through Breton, French, Irish and English use.
- Two syllables and no repeated consonant clusters, so it pairs easily with both short and long surnames.
To consider
- Ronan, Rowan and Ronin are three different names that sound close, and Ronan will sometimes be written as one of the others. The correction is quick, but it is a lifetime of quick corrections.
- The Irish spelling Rónán carries two accents that most American forms, keyboards and databases will not keep. If those marks matter to you, expect to restore them by hand.
- In the US, most Ronans are children rather than adults, so the name currently reads young here — something that changes on its own as they grow, but worth knowing now.
Documented properties of each name — how it spells, travels and shortens — not opinions about the child.
How each is likely to age
Louis
12%chance Louis feels dated by 2040
Louis has held the top-100 across 8 different decades — it has never depended on fashion, and names like that read the same at any age.
Ronan
40%chance Ronan feels dated by 2040
Ronan 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 reading of where each name sits on the long naming cycle — computed, not measured, and explained on the data page.
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 Louis and Ronan 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 Louis and Ronan?
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.
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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
- The steadiest names in America
- Victorian names ready for a second century
- Greatest Generation names (born 1901–1927)
- Silent Generation names (born 1928–1945)
- all guides
Where Louis and Ronan each sit in the library — alternatives in the same style, ranked by the same records.
Louis or Ronan — the short answers
- Which is more popular, Louis or Ronan?
- Ronan, in 2025: Ronan ranked #247 with 1,406 babies; Louis ranked #249 with 1,391 babies.
- Which name is rising faster, Louis or Ronan?
- Ronan. Over the last five years Louis moved up 11 places; Ronan moved up 23 places.
- Which is the older name, Louis or Ronan?
- Louis was already in use when US records began in 1880; Ronan entered the US charts in 1959. On the American record, Louis is the older name.
- How many people are named Louis and Ronan?
- About 174,000 people named Louis are estimated to be alive in the US today. About 20,500 people named Ronan are estimated to be alive in the US today.
- Will there be other Louiss or Ronans in the classroom?
- Louis will almost certainly be the only one in school. Ronan 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
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