Killian vs Kieran

Baby Name Comparison — 2026

Killian

Boy #370 Most Popular 3 Syllables

"associated with the church"

Origin: Irish Gaelic

Irish French American English

✓ All Clear

Boy #441 Most Popular 2 Syllables

"little dark one"

Origin: Irish Gaelic (ciar + -án)

Irish Scottish English

✓ All Clear

Killian Rank #370

Kieran Rank #441

Killian is more popular, ranked #370 vs #441 for Kieran.

Is Killian or Kieran more popular?

Killian is more popular, ranked #370 compared to Kieran at #441 in the United States.

What do Killian and Kieran mean?

Killian means "associated with the church" (Irish Gaelic origin). Kieran means "little dark one" (Irish Gaelic (ciar + -án) origin).

Are Killian and Kieran boy or girl names?

Killian is primarily a boy name. Kieran is primarily a boy name.