Marcelo
Masculine · “Little Marcus”
Marcelo is the Spanish and Portuguese shape of the Roman name Marcellus, a cognomen worn by consuls of the Republic and later by early bishops of Rome. Three easy syllables, the stress landing in the middle, ending on the open -o that Spanish shares with Italian and Portuguese. It has been on record in the United States for more than a century and is climbing now rather than fading.
How old is the name Marcelo?
Marcelo first appears in US birth records in 1907 — 118 years ago. The typical Marcelo alive today was born around 2011, making them about 14 years old. About 12,500 people named Marcelo are estimated to be alive in the US today.
When was the name Marcelo most popular?
Marcelo peaked in 2025, reaching #398 nationally. Today it ranks #398, exactly where it peaked. See the whole 2025 chart.
Marcelo appears on these lists:
Where it comes from
From Marcus to Marcelo
The story of Marcelo
Marcellus began as a Roman cognomen, a diminutive of the extremely common praenomen Marcus, and it stayed in use through the Republic, the Empire and into the Christian centuries, when several early bishops of Rome carried it. Latin names ending in -ellus regularly softened into -ello and -elo as Latin became Italian, Spanish and Portuguese, and Marcelo is the Iberian result of that ordinary sound change. It traveled with Spanish and Portuguese speakers across the Atlantic and became thoroughly at home in Latin America, especially Brazil, Argentina and Mexico. Its presence in US records reaches back well over a century, and today it is strongest in Texas, California and Florida.
Meaning
Little Marcus — a diminutive of Marcus, the Roman name tied to Mars
The line from Marcus to Marcellus to Marcelo is not in doubt. The one soft spot is further back: Marcus itself is standardly connected to Mars, god of war and, in older Roman religion, of agriculture, though the very earliest sense of the god's own name is beyond recovery.
How the name formed
- Marcus
- Marcellus
- Marcello
- Marcelo
Related forms: Marcello · Marcel · Marcellus · Marceli · Marcell · Marzell
Pronouncing Marcelo
mar-SEH-loh
Stress on the middle syllable. In Latin American Spanish and Brazilian Portuguese the c is an s sound; in Spain it is the th of 'think'. English speakers usually land on mar-SELL-oh, which everyone accepts.
Nicknames for Marcelo
High
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
- 1907
- Most boys named
- 2025798 — the highest on record
- Peak rank
- #398reached in 2025
- Change vs 2023
- +41.0%798 in 2025, from 566
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.
Marcelo in other languages
The same name elsewhere
- Marcello in Italian — same name
- Marcel in French — same name
- Marcellus in Latin — same name
- Marceli in Polish — same name
- Marcell in Hungarian — same name
- Marzell in German — related form
Strongest US states over the last decade: Texas, California, Florida.
Marcelos among us
people named Marcelo are estimated to be alive in the US today
About 1 boy in 2,140 born in 2025 was named Marcelo
Estimated from SSA birth records and published actuarial life tables. Method
Spellings of Marcelo
- #398
- Marcelo on the 2025 chart
- #311
- counting every spelling
The SSA counts spellings, not names. Marcelo went to 798 boys in 2025, but Marcello is the same name said out loud. Together the 2 spellings went to 1,063, which makes it the 311th most-given boys’ name of the year — 87 places above the chart.
- Marcelo798
- Marcello265
About 1 boy in 1,607 born in 2025 was given one of these spellings — against 1 in 2,140 for Marcelo itself.
Spellings are grouped by a fixed rule that folds interchangeable English spellings of one sound (ck/k, ph/f, x/ks, a non-initial y for i) and keeps vowels apart, so Sean and Shawn stay separate names. It errs towards splitting: a family here is never larger than the truth. SSA national data, 2025. Method
Is it right for you
What happens to a name after it peaks
The Dorian test
Every popular name lives one long story — a climb, a peak, a slow settling back. Marcelo's later chapters haven't been written yet, so we borrowed them: Dorian climbed just as high around 2000, and its whole arc is on record. Line the two peaks up, and Dorian's path sketches the road Marcelo is walking now.
Marcelo is climbing fast right now. Steep climbs tend to come with steep descents — the quicker a name arrives, the more firmly it belongs to its moment.
A scored estimate from 146 years of naming cycles — not a prophecy. Great names outlive statistics. How this is scored
Where Marcelo is headed
Marcelo looks set to keep climbing gently, with roughly 21% more babies a year by 2030 if the current curve holds.
Medium 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.
Marcelo beside its neighbors
The names ranked closest to Marcelo in 2025, in babies rather than position — the bars are to scale.
US boys given each name in 2025.
The trade-off
- One spelling serves Spanish, Portuguese and English, and the pronunciation stays close enough across all three that no one has to relearn it.
- A documented line back to Roman Latin, with the same name still in daily use as Marcello, Marcel and Marceli across Europe.
- Several real short forms already in circulation — Marce, Chelo, Celo — so a child is not stuck with all three syllables every time.
- Familiar enough in Texas, California and Florida that it reads as a known name, while a child is unlikely to share it with a classmate.
- The near-twins cause trouble: Marcello with two Ls is Italian, Marcelino and Marcelina are separate names, and Marcelo will occasionally be written with the extra L by people acting on instinct.
- Some English speakers, seeing the -cel-, reach for the Italian ch sound and say mar-CHEL-oh. A quick correction usually settles it, but expect to give it now and then.
- It is rising rather than resting, so the near-certainty of being the only one in a school today is less of a promise for the years ahead.
- Outside Texas, California and Florida the name is thinner on the ground, which mostly means fewer people will have heard it before meeting your son.
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What they receive
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Marcelo
Masculine · #398 in the U.S.
Frequently asked
- How many Marcelos are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 12,500 people named Marcelo are estimated to be alive in the US today.
- How do you spell Marcelo?
- Marcelo is the most-used spelling in US records — 798 of the 1,063 babies given the name in 2025. The others recorded are Marcello.
- How popular is the name Marcelo in 2025?
- Marcelo ranks #398 among US boy names in 2025, with 798 babies given the name.
- How rare is the name Marcelo?
- About 1 in every 2,140 US boys born in 2025 was named Marcelo — 798 in all.
- Will my child share the name Marcelo with classmates?
- Marcelo will almost certainly be the only one in school.
Ranked beside Marcelo
Names sitting at a similar level of popularity right now.
Edwin#398 · Kian#400 · Kylo#400 · Jared#396 · Kashton#400 · Zander#396 · Raymond#394 · Raphael#394
Looking for what else is popular rather than what resembles Marcelo? See the current top 100.
Choosing between Marcelo and another name?
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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