Back to Baby Names

Cillian vs Casey

Baby Name Comparison — 2026

Popularity Comparison

Cillian Rank #464
Casey Rank #310

Casey is more popular, ranked #310 vs #464 for Cillian.

Frequently Asked Questions

Is Cillian or Casey more popular?

Casey is more popular, ranked #310 compared to Cillian at #464 in the United States.

What do Cillian and Casey mean?

Cillian means "strife, war" (Old Irish origin).

Are Cillian and Casey boy or girl names?

Cillian is primarily a boy name. Casey is primarily a boy name.

More Comparisons

Casey vs Cillian Cillian vs Allen Cillian vs Kyle Cillian vs Keegan Cillian vs Killian
← Full profile: Cillian ← Full profile: Casey Browse all baby names