Cassius is a boy name with a modern feel, drawn from real birth records. Below you'll find what Cassius means and where it comes from, plus how many babies have been named Cassius across the United States, UK, Ireland and New Zealand, how popular Cassius has been over the decades, and the year it peaked.
Cassius is a boy name of Latin origin meaning “hollow, or vain”. A Roman family name.
| Country | Births on record |
|---|---|
| United States since 1880 | 9,766 births |
| England & Wales since 1996 | 2,305 births |
| Scotland since 1974 | 27 births |
| Northern Ireland since 1997 | 3 births |
Counts come from official national birth-registration statistics: U.S. Social Security Administration, England & Wales (Office for National Statistics), Scotland (National Records of Scotland), Northern Ireland (NISRA), Ireland (Central Statistics Office) and New Zealand (Dept. of Internal Affairs). Coverage spans differ, so totals aren't directly comparable across countries.
Babies named Cassius per year, United States (1880 to 2025). United States peaked in 2021 (612/yr) · England & Wales peaked in 2023 (174/yr) · Scotland peaked in 2017 (5/yr) · Northern Ireland peaked in 2021 (3/yr).
Cassius has been a fairly common baby name in the United States. It was most common in 2021, when it ranked #998 nationally (given to 615 babies that year).
Kassius · Kassaius · Kasius · Casius · Kassious
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