Cassius

Meaning: Possibly empty or vain
Origin: Latin — From a Roman family name

Nicknames: Cass

Boy's name · #583 in the US (2025) · 2020s wave

Popularity over time

Cassius reached its best rank, #430, in 1880 and ranked #583 in 2025. Roughly 9,700 boys have been named Cassius since 1880.

Across the states

See where Cassius is more common.

Appears in 2020-2025 birth records of 38 states. See the full state-by-state map on this page.

Around the world

See how Cassius ranks in other countries and regions.

#319 in England & Wales (2025) · #741 in Canada (2025) · #1,447 in Sweden (2025) · #2,154 in Austria (2025) · #3,386 in Ecuador (2025) · #727 in Scotland (2024) · #3,789 in France (2024) · #233 in New Zealand (2023) · #1,367 in Belgium (2023) · #433 in N. Ireland (2021).

Famous Cassiuses

Cassius Dio — Greco-Roman statesman and historian (c. 165–c. 235)
Cassius M. Clay — American planter, politician and ambassador to Russia (1810–1903)
Cassius Chaerea — 1st-century Roman soldier and officer (12 BCE–41 CE)
Cassius Marcellus Coolidge — American painter (1844–1934)
Cassius Marcellus Clay Sr. — American painter, father of Muhammad Ali (1912–1990)

In stories & tradition

Cassius — Fire Emblem Awakening (video game)

What Cassiuses become

Among 82 notable people named Cassius:

Lawyers & judges appear 2.14× more often than among typical names — e.g. Cassius Gaius Foster, American judge (1837–1899).

Similar names: Kassius · Ephraim · Casper · Lucien · Kasen · Julius

Browse more boy names — popularity, trends and eras for 5,700+ American names, free.

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