Head to head · Boys' names
Leo vs Samuel
#19 vs #18 in 2025
Samuel is a whisker ahead (#18 vs #19 in 2025), but the curves point different ways: Samuel is back after a long quiet spell, Leo is climbing the charts fast. On momentum, Leo has the edge.
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, Samuel leads 4 measures of 6; Leo 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
- 1880s: Leo #82, Samuel #18 — Samuel higher
- 1890s: Leo #45, Samuel #25 — Samuel higher
- 1900s: Leo #44, Samuel #32 — Samuel higher
- 1910s: Leo #48, Samuel #37 — Samuel higher
- 1920s: Leo #53, Samuel #47 — Samuel higher
- 1930s: Leo #86, Samuel #61 — Samuel higher
- 1940s: Leo #135, Samuel #65 — Samuel higher
- 1950s: Leo #177, Samuel #74 — Samuel higher
- 1960s: Leo #247, Samuel #81 — Samuel higher
- 1970s: Leo #335, Samuel #61 — Samuel higher
- 1980s: Leo #397, Samuel #52 — Samuel higher
- 1990s: Leo #462, Samuel #34 — Samuel higher
- 2000s: Leo #281, Samuel #25 — Samuel higher
- 2010s: Leo #102, Samuel #23 — Samuel higher
- 2020s: Leo #25, Samuel #20 — Samuel higher
Samuel stood higher in every recorded decade — 15 of 15.
Rank by decade
| Decade | Leo | Samuel |
|---|---|---|
| 1880s | #82 | #18 |
| 1890s | #45 | #25 |
| 1900s | #44 | #32 |
| 1910s | #48 | #37 |
| 1920s | #53 | #47 |
| 1930s | #86 | #61 |
| 1940s | #135 | #65 |
| 1950s | #177 | #74 |
| 1960s | #247 | #81 |
| 1970s | #335 | #61 |
| 1980s | #397 | #52 |
| 1990s | #462 | #34 |
| 2000s | #281 | #25 |
| 2010s | #102 | #23 |
| 2020s | #25 | #20 |
Average national rank across each decade. A dash means the name sat outside the recorded top of that decade.
Around the world
Leo
- Canada#4
- England & Wales#5
- Scotland#7
Samuel
- Canada#24
- England & Wales#60
- Scotland#65
- France#70
National statistics offices, latest published year.
The names themselves
Meaning, roots, sound and the people who carried each
Where each name comes from
Leo
Lion
Straight from Latin leo, itself borrowed from Greek leon. The same word gives us the constellation and zodiac sign.
Leon (Greek) → Leo (Latin) → Leo
How it traveled
The word came into Latin from Greek leon and was in use as a Roman personal name by late antiquity. Christianity did most of the carrying: the popes named Leo, beginning in the fifth century, kept the name in continuous official use for some fifteen hundred years, and Byzantine emperors bore it too.
Samuel
name of God — or, in the other reading, God has heard
Hebrew Shemu'el is read two ways: shem, name, with el, God, giving the name of God; or a form of shama, to hear, giving God has heard. The narrative in First Samuel attaches a third explanation, from a verb meaning to ask, which does not fit the letters. Two of the three are serious and the third is famous.
Shemu'el → Samouel → Samuel
How it traveled
Samuel is the hinge of the story: the last of the judges and the man who anoints the first two kings, first Saul and then, when Saul fails, David. He is also the one who argues against having a king at all, warns the people exactly what a monarchy will cost them, and is overruled.
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
Leo
LEE-oh
Two syllables, stress on the first. Said the same way in English, German and Dutch; French adds a light accent, Léo, without changing the sound much.
- Lee — The main informal trim, and a long-established given name in its own right in the US.
- Leo — Most often it works the other way round: Leo is the everyday form for Leonardo, Leonard, Leopold and Leonidas, and stands alone as a full legal name just as readily.
Samuel
SAM-yoo-ul
Three syllables, stress on the first. Spanish and French put the weight at the end, sah-MWEL. Hebrew Shmuel has two syllables and no vowel at all in the first, which English cannot manage.
- Sam — The default, used by most Samuels and serving either child; also a full name in its own right.
- Sammy — The warmer form, often the family version rather than the public one.
- Sami — The spelling used in Arabic-speaking and European families; a name of its own there.
Who has carried each name
Leo
Leo XIV (b. 1955) — First American pope
Leo XIII (b. 1810) — Pope whose 1891 encyclical championed workers' rights
Leo I (b. 390) — Leo the Great — talked Attila the Hun out of sacking Rome
Samuel
Samuel L. Jackson (b. 1948) — The highest-grossing actor in film history
Samuel Morse (b. 1791) — Invented Morse code
Samuel Beckett (b. 1906) — Nobel laureate who wrote Waiting for Godot
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 Leo if you want…
- a name on the way upup 17 places on the charts in five years
Choose Samuel if you want…
- a name that charts abroad tooSamuel is on the national lists of Canada, England & Wales, Scotland and France
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
Leo
Strengths
- Four letters that spell themselves — almost nobody will ask you to repeat it or write it down twice.
- Recognized across English, German, Italian, Spanish, French and Greek, with only small changes at the edges.
- An unbroken written record from Roman antiquity through the papacy to the present, so it has never needed reviving.
To consider
- It is rising quickly. Older generations knew relatively few Leos; the children being named now are joining a much larger group, so expect classmates.
- It sits in a crowded sound family — Leon, Milo, Theo, Leonardo — and people who half-hear it sometimes reach for the wrong one.
- Almost nothing to shorten. If you like a formal long name with a casual everyday version, Leo is already the casual version.
Samuel
Strengths
- Spelled identically in English, Spanish, Portuguese, French and German.
- Three thousand years of continuous documented use.
- Sam is instantly usable, serves either child, and is a full name on its own.
To consider
- It is very widely used and has been for most of the last two decades.
- Sam is shared with Samantha, Samson and Sampson, so it identifies nothing.
- The explanation the Bible itself gives for the name does not fit the name.
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 Leo and Samuel 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 Leo and Samuel?
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 that carry both names
- Transatlantic hits: loved on both sides of the ocean
- America's top 100 names right now
- Gorgeous — and about to be everywhere
- all guides
Every list here names both Leo and Samuel — the same style, ranked by the same records.
Leo or Samuel — the short answers
- Which is more popular, Leo or Samuel?
- Samuel, in 2025: Samuel ranked #18 with 8,334 babies; Leo ranked #19 with 8,173 babies.
- Which name is rising faster, Leo or Samuel?
- Leo. Over the last five years Leo moved up 17 places; Samuel moved up 7 places.
- Which is the older name, Leo or Samuel?
- The US record cannot say: both were already in use when it began in 1880.
- How many people are named Leo and Samuel?
- About 149,000 people named Leo are estimated to be alive in the US today. About 632,000 people named Samuel are estimated to be alive in the US today.
- Will there be other Leos or Samuels in the classroom?
- Roughly 1 in 8 classrooms will have a child named Leo. Roughly 1 in 8 classrooms will have a child named Samuel.
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 Leo, Samuel and the rest of your shortlist with your last name in one printable report.
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