Killian vs Sean

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 #437 Most Popular 1 Syllable

"God is gracious"

Origin: Hebrew via Irish

Irish English American Scottish

✓ All Clear

Killian Rank #370

Sean Rank #437

Killian is more popular, ranked #370 vs #437 for Sean.

Is Killian or Sean more popular?

Killian is more popular, ranked #370 compared to Sean at #437 in the United States.

What do Killian and Sean mean?

Killian means "associated with the church" (Irish Gaelic origin). Sean means "God is gracious" (Hebrew via Irish origin).

Are Killian and Sean boy or girl names?

Killian is primarily a boy name. Sean is primarily a boy name.