Cassius
Cassius is a boys' name of Latin origin meaning “hollow, vain.” It ranked #410 in the United States in 2025. Cassius is an ancient Roman family name most famously borne by Cassius Clay, Muhammad Ali's birth name.
how do you pronounce Cassius?
KASH-us
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what does Cassius mean?
The name Cassius means “hollow, vain.” It comes from the Latin language tradition.
Cassius is an ancient Roman family name most famously borne by Cassius Clay, Muhammad Ali's birth name. It carries the weight of Roman history through Gaius Cassius Longinus, one of Julius Caesar's assassins.
how popular is this name?
| Year | Rank |
|---|---|
| 2024 | #410 |
| 2023 | #450 |
| 2022 | #495 |
| 2021 | #538 |
| 2020 | #590 |
Source: SSA National Baby Names Dataset
who are famous people named Cassius?
- Muhammad Ali (born Cassius Clay, boxing legend)
- Gaius Cassius Longinus (Roman senator)
- Cassius Marsh (NFL player)
what names are similar to Cassius?
Last reviewed April 30, 2026 · Curated by HushName editorial
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