Kassius
Masculine · “empty”
Kassius is overwhelmingly a boys’ name — 1,187 boys against 10 girls since 1880.
Kassius respells Cassius — a Roman family name, possibly from cassus, empty — and Cassius led the conspiracy against Caesar.
How old is the name Kassius?
Kassius first appears in US birth records in 2001 — 24 years ago. The typical Kassius is a kid of about 5 — this name's wave is very recent. About 1,200 people named Kassius are estimated to be alive in the US today.
When was the name Kassius most popular?
Kassius peaked in 2022, reaching #1457 nationally. Today it ranks #2230, 773 places below that high. See the whole 2022 chart.
Where it comes from
From cassus to Kassius
The story of Kassius
Gaius Cassius Longinus organized the conspiracy against Caesar and Shakespeare gives him the lean and hungry look. Cassius Clay took the name into the twentieth century before changing it. The Kassius spelling appears in American records in current use.
Meaningscholars disagree
empty, hollow
From the Roman family name Cassius, generally derived from the Latin cassus, 'empty' or 'vain', though the derivation is not certain for the gens. The K spelling is modern. The Latin word is documented; its application to the family name is inferred.
How the name formed
- cassus
- Cassius
- Kassius
Related forms: Cassius · Cassius · Cassio
Pronouncing Kassius
KASH-us
Two syllables, stress on the first. Latin says KAS-see-us with three.
Nicknames for Kassius
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
- 2001
- Most boys named
- 2022124 — the highest on record
- Peak rank
- #1457reached in 2022
- Change vs 2024
- −25.0%63 in 2025, from 84
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.
Kassius in other languages
The same name elsewhere
- Cassius in Latin — spelling variant
- Cassius in English — spelling variant
- Cassio in Italian — related form
Strongest US states over the last decade: Texas, California, Florida.
Kassiuss among us
people named Kassius are estimated to be alive in the US today
About 1 boy in 27,112 born in 2025 was named Kassius
Estimated from SSA birth records and published actuarial life tables. Method
Spellings of Kassius
- #2230
- Kassius on the 2025 chart
- #479
- counting every spelling
The SSA counts spellings, not names. Kassius went to 63 boys in 2025, but Cassius is the same name said out loud. Together the 2 spellings went to 567, which makes it the 479th most-given boys’ name of the year — 1,751 places above the chart.
- Cassius504
- Kassius63
About 1 boy in 3,012 born in 2025 was given one of these spellings — against 1 in 27,112 for Kassius 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 Sagar test
Every popular name lives one long story — a climb, a peak, a slow settling back. Kassius's later chapters haven't been written yet, so we borrowed them: Sagar climbed just as high around 1986, and its whole arc is on record. Line the two peaks up, and Sagar's path sketches the road Kassius is walking now.
Kassius 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 Kassius is headed
Kassius should hold steady through 2030 — the curve is flat, and flat curves are the most predictable kind.
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.
Kassius beside its neighbors
The names ranked closest to Kassius in 2025, in babies rather than position — the bars are to scale.
US boys given each name in 2025.
The trade-off
- The conspirator against Caesar is a first-rate historical bearer.
- Kass and Cash are two short forms, both usable.
- Two clean syllables with no pronunciation risk in English.
- Cassius is the standard spelling.
- The derivation from 'empty' is inferred rather than proven.
- The English and Latin pronunciations differ in syllable count.
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What they receive
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Kassius
Masculine · #2230 in the U.S.
Frequently asked
- How many Kassiuss 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 Kassius are estimated to be alive in the US today.
- How do you spell Kassius?
- Kassius is one of 2 recorded spellings. Cassius is the more common one — 504 births in 2025 against 63 for Kassius.
- How popular is the name Kassius in 2025?
- Kassius ranks #2230 among US boy names in 2025, with 63 babies given the name.
- How rare is the name Kassius?
- About 1 in every 27,112 US boys born in 2025 was named Kassius — 63 in all.
- Will my child share the name Kassius with classmates?
- Kassius will almost certainly be the only one in school.
Ranked beside Kassius
Names sitting at a similar level of popularity right now.
Rayaan#2230 · Tyce#2230 · Earl#2230 · Gene#2230 · Sylis#2230 · Vinny#2230 · Klaus#2230 · Damoni#2230
Looking for what else is popular rather than what resembles Kassius? See the current top 100.
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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