Home › Baby Names Directory › Kasius

Kasius

♂ Boy

Pronounced KASS-ee-us /ˈkæs.i.əs/Medium

Meaning: A modern K- spelling of Cassius, an old Roman family name usually connected to Latin cassus, 'empty; hollow; vain' — though the sense was long ago left behind by the name itself. The respelling is American; the root is Latin.Low

In 30 seconds: Roman weight with a modern K: Kasius is a spin on Cassius, a Latin family name (said 'KASS-ee-us'). Routes for the respelling are uncertain, which we note.

💕 Browse more names

Origin LowLatin, English

MeaningA modern K- spelling of Cassius, an old Roman family name usually connected to Latin cassus, 'empty; hollow; vain' — though the sense was long ago left behind by the name itself. The respelling is American; the root is Latin.

U.S. rank (2024)#13220 ↘ Falling

2024 U.S. births5 boys (0.00% of U.S. boys)

Peak year2023

Total births (all-time)≈ 31

Popularity in the U.S. · SSA data

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

Kasius is a contemporary K- respelling of Cassius, a Roman gens name generally traced to Latin cassus, 'empty; vain' — a sense the name shed long ago. The K spelling is a recent American touch, so its route is uncertain, which we note (said 'KASS-ee-us').

It appears only rarely for boys in the U.S., far behind Cassius itself. Rare, classical-modern, and bold.

Did you know? Cassius is one of Rome's oldest family names — worn by the senator Cassius of Shakespeare's Julius Caesar. Kasius simply trades the C for a K, giving the classical name a modern edge (said 'KASS-ee-us').

Overall data confidence 42%

References — Kasius — Cassius (Roman gens name) respelled with K

Variations

CassiusCassioKassius

Nicknames

KasCass

Famous Bearers

Famous bearers coming soon.

If you like Kasius…

Cassius— the classical name behind it

Kasen— a like modern K- pick

Cassian— a close Latin cousin

Titus— a like short Roman name

Explore names like Kasius

By themelatin modern-spelling strong classical

All themes →All meanings →All origins →

Frequently Asked

What does the name Kasius mean?

Kasius is a modern spelling of Cassius, a Roman family name usually linked to Latin cassus, 'empty; vain' — a sense the name long outgrew.

How do you pronounce Kasius?

It's said KASS-ee-us /ˈkæs.i.əs/ — three syllables, stress on the first.

Is Kasius a boy or girl name?

Kasius is used as a boy's name.

How popular is Kasius?

Kasius is a rare name for boys in the U.S., though Cassius is far more familiar.