Cassius
Meaning: not confirmed (origin debated)
About the name Cassius
The origin of Cassius is debated, and we couldn't confirm its meaning from a sourced etymology. A commonly cited theory links it to Latin roots, with the meaning āRoman family name, possibly "hollow"ā. Treat that as a theory, not a settled fact.
Why we say this: we only state a meaning as fact when a sourced etymology (Wiktionary, with its references) supports it. For Cassius we didn't find one we were confident in, so we show the popular explanation as a theory.
It has a unique feel. In 2025, Cassius ranked #583 for boys in the US, with 504 babies given the name. Its peak year since 1940 was 2021. Since 2000, 100% of US babies named Cassius were boys.
- US rank 2025
- #583
- In 2015
- #644
- Babies in 2025
- 504
Popularity of Cassius, 1940ā2025
Latest SSA data: 2025.
Popularity data: U.S. Social Security Administration national baby names (public domain; names given to at least 5 babies of one sex per year).
Nicknames for Cassius
- Cash
Names similar to Cassius
Name meanings marked or linked āWiktionaryā are adapted from Wiktionary by Wiktionary contributors, CC BY-SA 4.0; each name page links its source entry.