Cassius

“Possibly from Latin cassus — 'empty, vain' (Roman family name Cassius)” — Latin origin

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

Cassius reached its best rank, #430, in 1880 and ranked #583 in 2025. Roughly 9,700 boys have been named Cassius since 1880. Cass is a short form of Cassius.

Around the world: about 1 in 1,900 boys in England & Wales (2025) · about 1 in 5,300 boys in Canada (2024).

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

Famous Cassiuses

Cassius Dio — Greco-Roman statesman and historian (c. 155–c. 235)
Cassius Longinus — Syrian/Egyptian Neoplatonist philosopher (c.213–273)
Cassius Chaerea — assassin of emperor Caligula
Cassius Marcellus Coolidge — American artist (1844-1934)
Cassius M. Clay — American planter, politician and ambassador to Russia (1810-1903)

In stories & tradition

Cassius — Fire Emblem Awakening

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, United States federal judge.

Similar names: Kassius · Ephraim · Kasen · Marcellus · Lucius · Cal

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

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