Cassius

What does Cassius mean?

Cassius comes from a Latin family name that is usually linked to the root cassus, meaning empty or hollow. In its original context it was a Roman clan name rather than a descriptive given name.

Today Cassius feels weighty and historical while still bold and energetic. It carries echoes of Roman history and Shakespearean drama, giving it a slightly aristocratic, literary tone that works well for parents who want a classical name with strong modern presence.

Historical Context

Cassius began as a Roman family name, a nomen that identified members of a particular gens. The root cassus is often translated as empty or hollow, though the precise reason that family took the name is not recorded and may be lost to history. As a Roman nomen it belonged to real historical figures and later to people recorded in imperial and republican sources.

The name gained wider cultural recognition through literature. In Shakespeare's play Julius Caesar, the character Cassius is a central conspirator, which cemented the name's association with sharp intellect and political cunning in English-language culture. In more recent times the name returned to public view through figures such as the boxer Cassius Clay, who later changed his name to Muhammad Ali. That association adds a layer of modern celebrity and strength. Over time Cassius has evolved from a distinctly Roman label to a given name used across English-speaking countries, appreciated for its classical pedigree and bold sound.

Popularity of Cassius over time

In 2025, Cassius was given to 140 boys in the UK and 504 boys in the US. Cassius has risen sharply over the last 20 years, and is now an uncommon boys' name especially in the US.

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