Cassius
/K-AE-SH-AH-S/
Hollow, vain, the Roman clan name that Muhammad Ali chose to discard and that Shakespeare made immortal — Cassius Longinus plotted Caesar's assassination, and Cassius Clay became Muhammad Ali by rejecting the name as a slave-holder's inheritance
See Cassius scored for your familyQuick — what every parent wants to know about Cassius:
Yes — Cassius is a Christian boy name of Latin origin, meaning “Hollow, vain, the Roman clan name that Muhammad Ali chose to discard and that Shakespeare made immortal — Cassius Longinus plotted Caesar's assassination, and Cassius Clay became Muhammad Ali by rejecting the name as a slave-holder's inheritance”. It also appears in Other tradition.
How well does Cassius fit your family?
This page tells you what Cassius means. The app tells you whether it's right for your baby — scored against the names already in your family, your heritage, and your baby's exact birth star.
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Six signals — scored for your family, not in the abstract:
Meaning & origin
Cassius is a boy's name of Latin origin, traditionally used in Christian families. The name means "Hollow, vain, the Roman clan name that Muhammad Ali chose to discard and that Shakespeare made immortal — Cassius Longinus plotted Caesar's assassination, and Cassius Clay became Muhammad Ali by rejecting the name as a slave-holder's inheritance" and belongs to the Unique cluster — rare names — carefully chosen and rarely heard.
Beyond its Christian heritage, Cassius is also used in Other traditions, reflecting how this name has traveled across cultures.
Common among Italian, American, European families, Cassius carries cultural weight that goes beyond its dictionary definition — it's a name with a story and a community.
What would a baby named Cassius look like?
NameRoot imagines a one-of-a-kind AI baby portrait for every name, shaped by its heritage — the features, the colouring, the feeling a name like Cassius carries. No two are alike.
See Cassius's portrait — and its full score — the moment you open the app.
See Cassius's baby portrait →What does Cassius's numerology say?
Numerology assigns each name a single-digit destiny number by summing its letter values. Different schools use different mappings — NameRoot computes both so you can see how Cassius resonates in either tradition.
Cassius's destiny number is 1 — but a number only matters in context. The app matches it to your family's own numbers for a real compatibility read. See Cassius's full reading →
Does Cassius go with your family's names?
Cassius breaks into 5 sounds: /K-AE-SH-AH-S/. The real test isn't how it sounds alone — it's how it sounds beside the names already in your family: yours, your partner's, and any brothers or sisters. NameRoot scores that harmony, so Cassius sits naturally next to a Mum and Dad like Michael & Anna, or a big sister named Gianna — no awkward clashes, no two names that blur together. Hear Cassius beside your family's names →
Nicknames
Common affectionate forms of Cassius — useful for everyday family conversation, early childhood, or as standalone given names themselves.
Names similar to Cassius
If Cassius resonates with you, these names live in the same world — drawn from the same tradition, sharing the same meaning, or echoing a similar sound.
From the same tradition
Other Christian boy names, common in Italian families
Sharing the same meaning
Other Christian boy names from the Unique cluster
Names that sound similar
Christian boy names that open with the same syllables as Cassius
Explore more names
Keep exploring names like Cassius — by tradition, by meaning, or by first letter.
Common questions about Cassius
What does the name Cassius mean?
Cassius means "Hollow, vain, the Roman clan name that Muhammad Ali chose to discard and that Shakespeare made immortal — Cassius Longinus plotted Caesar's assassination, and Cassius Clay became Muhammad Ali by rejecting the name as a slave-holder's inheritance." It is a boy name of Latin origin, traditionally used in Christian families.
Is Cassius a boy or girl name?
Cassius is most commonly used as a boy name.
What is the origin of the name Cassius?
Cassius is of Latin origin, used in Christian, Other traditions, commonly among Italian, American, European families.
Is Cassius a Christian name?
Yes. Cassius is a boy name traditionally used in Christian families, of Latin origin. It also appears in Other tradition.
What does Cassius mean in Latin?
Cassius originates from Latin, where it means "Hollow, vain, the Roman clan name that Muhammad Ali chose to discard and that Shakespeare made immortal — Cassius Longinus plotted Caesar's assassination, and Cassius Clay became Muhammad Ali by rejecting the name as a slave-holder's inheritance."
What are common nicknames for Cassius?
Common short forms of Cassius include Casi, Cass.
What is the numerology of Cassius?
Cassius has a Pythagorean destiny number of 1 — leadership and pioneering spirit.
See how Cassius scores for your family
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