Kassius
Kassius was the 2243rd most popular name for boys in 2025, given to 63 babies. Its best year was 2022, when it ranked 1463rd with 124 babies. Over the last ten years it has moved up 497 places. More babies were named Kassius in the 2020s than in any other decade.
Meaning (as Cassius) Roman family name (gens Cassia) · Latin
- Rank in 2025
- #2,243 boys, down 658 places since 2020
- Babies in 2025
- 63boys
- Girls and boys
- Almost always a boy’s name2021–2025
- Peak year
- 2022124 babies
- Total since 1880
- 1,197babies recorded
What does the name Kassius mean?
Kassius is a spelling of Cassius, pronounced the same way, so it shares Cassius's meaning and origin.
Cassius is a Latin name, the name of the Roman family (gens) Cassia. Wiktionary gives no meaning for the family name, and our sources do not settle one. In the US the name is also tied to the boxer Muhammad Ali, who was born Cassius Marcellus Clay Jr. Wiktionary records two English pronunciations, KASH-us and KASS-ee-us, and US records show the name in use since the 19th century.
Cassius (Latin, “member of the gens Cassia”)
How sure is this? Uncertain. The Roman family name is certain; its meaning is not given by our sources. A popular link with Latin cassus ('empty') is unconfirmed.
Related names: Cassio, Cash, Cass.
See also: Latin names.
Sources for this meaning
- Wiktionary, entry 'Cassius' (English section), Wiktionary (CC BY-SA 4.0; facts restated, no text reused)
- Wiktionary, entry 'Cassius' (Latin section), Wiktionary (CC BY-SA 4.0; facts restated, no text reused)
- The American Heritage Dictionary of the English Language, 5th ed., biographical entry 'Ali, Muhammad', HarperCollins / Houghton Mifflin Harcourt
- US Social Security Administration, national baby-name data 1880-2025 (yob*.txt), team3 computation of first year recorded, US Social Security Administration (public domain)
Kassius popularity since 1880
A few girls are given the name too: 10 since 2018.
| Year | Rank (boys) | Babies (boys) |
|---|---|---|
| 2025 | #2,243 | 63 |
| 2020 | #1,585 | 103 |
| 2010 | #4,304 | 23 |
| 2000 | — | — |
| 1990 | — | — |
| 1980 | — | — |
| 1970 | — | — |
| 1960 | — | — |
| 1950 | — | — |
| 1940 | — | — |
| 1930 | — | — |
| 1920 | — | — |
| 1910 | — | — |
| 1900 | — | — |
| 1890 | — | — |
| 1880 | — | — |
How popular is Kassius, counting every spelling?
Kassius is a spelling of Cassius, a name family that ranked #526 for boys in 2025 once every spelling is counted together, compared with #2,243 for Kassius on its own. Together these spellings went to 573 boys in 2025.
| Spelling | Babies 2025 | Official rank | Babies 2021–2025 |
|---|---|---|---|
| Cassius | 504 | #583 | 2,677 |
| Kassius | 63 | #2,243 | 494 |
| Kasius | 6 | #11,345 | 32 |
Spellings count together when they sound the same in American English and are used for the same sex; nicknames and forms that sound different (such as Theo and Theodore) are kept apart. How we group spellings.
How many kids will share the name Kassius?
63 of the 3,606,400 babies born in the US in 2025 were named Kassius (0.02 per 1,000 births). For a boy named Kassius born in 2025, the chance that another child with the same name is in a class of 20 children the same age is under 1 in 50. If every grade liked the name as much as the 2025 babies do, only about one elementary school in 133 (of 430 pupils) would have a child named Kassius.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Kassius?
About 1,200 people born in the US named Kassius are alive today, with a median age of 6; half are between 4 and 10. That makes Kassius a young name: most people with it are children.
Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.
Kassius by state
How common Kassius was among boys born in each state in 2021–2025. In 36 states fewer than five boys a year got the name, too few for SSA to publish, so those states show as zero.
Names with a similar history
These names rose and fell in step with Kassius: their share of US boys followed the most similar curve since 1880. If you like Kassius, they share its era and feel.
Questions about the name Kassius
What does Kassius mean?
Kassius is a spelling of Cassius, usually explained as “Roman family name (gens Cassia)”, but this is uncertain. Certainty: uncertain.
How popular is the name Kassius?
Kassius was the 2243rd most popular name for boys in 2025, given to 63 babies. Its best year was 2022, when it ranked 1463rd with 124 babies. Over the last ten years it has moved up 497 places. More babies were named Kassius in the 2020s than in any other decade.
Is Kassius a boy or girl name?
In 2021–2025, almost always a boy’s name given the name Kassius in the US.
Where is Kassius most popular?
In 2021–2025, Kassius was most common in Mississippi (0.09 per 1,000 boys), followed by Arizona and Florida.