Cas

♂ Boy

Pronounced KAS /ˈkæs/High

Meaning: A short form of Cassius ('hollow; empty', Latin Roman family name) and Castiel ('my cover/shield is God', Hebrew, an angel); also short for Casey; routes layeredLow

In 30 seconds: Hollow; an angel of God: Cas is a short form of Cassius/Castiel. Crisp, modern, and warm.

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Origin LowLatin, Hebrew

MeaningA short form of Cassius ('hollow; empty', Latin Roman family name) and Castiel ('my cover/shield is God', Hebrew, an angel); also short for Casey; routes layered

U.S. rank (2024)#7829 ↗ Rising

2024 U.S. births10 boys (0.00% of U.S. boys)

Peak year2020

Total births (all-time)≈ 181

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

Cas is a short form of Cassius ('hollow; empty', a Latin Roman family name) and Castiel ('my cover/shield is God', Hebrew, an angel; made known by the show Supernatural); it is also short for Casey (routes layered, which we note). A crisp, modern name (said 'KAS').

In the U.S. it appears as a nickname-name. Rare, hollow-and-an-angel at the root, and modern.

Did you know? Cassius means 'hollow; empty' (Latin) and Castiel 'my shield is God' (Hebrew, an angel) — Cas is a crisp short form, modern and warm (the routes are layered, which we note; said 'KAS').

Overall data confidence 34%

References — Cassius — routes layered

Variations

CassCazKas

Nicknames

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Famous Bearers

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If you like Cas…

Cass— a kin spelling

Cassius— a name it shortens

Castiel— a name it shortens

Casey— a name it shortens

Explore names like Cas

By themeuncertain hebrew latin nickname-name

By meaningGod / Divine Protector Angel

All themes →All meanings →All origins →

Frequently Asked

What does the name Cas mean?

Cas is a short form of Cassius ('hollow') and Castiel ('my shield is God', an angel); the routes are layered.

How do you pronounce Cas?

It's said KAS /ˈkæs/ — one syllable.

Is Cas a boy or girl name?

Cas is a boy's name.

How popular is Cas?

Cas is a rare name in the U.S.