Kieran vs Casey

Baby Name Comparison — 2026

Kieran

Boy #441 Most Popular 2 Syllables

"little dark one"

Origin: Irish Gaelic (ciar + -án)

Irish Scottish English

✓ All Clear

Boy #310 Most Popular 2 Syllables

Irish English American

✓ All Clear

Kieran Rank #441

Casey Rank #310

Casey is more popular, ranked #310 vs #441 for Kieran.

Is Kieran or Casey more popular?

Casey is more popular, ranked #310 compared to Kieran at #441 in the United States.

What do Kieran and Casey mean?

Kieran means "little dark one" (Irish Gaelic (ciar + -án) origin).

Are Kieran and Casey boy or girl names?

Kieran is primarily a boy name. Casey is primarily a boy name.